The Hottest Celebrity Bikini Moments of 2021: From Hailey Baldwin to Heidi Klum

Bikini babes! With summer in full swing, stars have been showing off their cute suits and spunky style. 

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And from barely-there bottoms to bathing suits with body jewelry, it’s safe to say that 2021 has seen some seriously sexy snaps. 

Whether they’re just chilling their backyard or soaking up the sun on vacation, celebs have been heating up our Instagram feeds all year long. 

While some will rock a simple suit, many like to put their own stylish spin on swimwear. This year has seen a resurgence of everything from ‘90s trends to western influence. 

One summer accessory they can’t seem to get enough of? Bucket hats! Nina Agdal anticipated the trend in January, with Simone Biles following in her footsteps come March. 

Our favorite take on the look however was done by Addison Rae. The 20-year-old TikTok star committed to the vibe, opting for a purple bucket hat, floral print bikini top, leopard mini skirt and slinged-back pumps. 

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Hailey Baldwin found herself turning to Y2K for a style cue too, rocking rainbow rubber bands in her hair. 

When the stars aren’t channeling the early aughts, many have looked to western style for inspo. Everyone from Olivia Jade to Dua Lipa has decided that adding a pair of leather boots and a cowgirl hat is the coolest new summer look. And hey, who are we to argue?! 

Obviously, there are always stars who like to show off their swimwear splurges. Be it Larsa Pippen’s chic Chanel suit or SZA’s Dior bikini, there’s no question that this year has seen a fair share of designer duds. 

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A special shoutout goes to Emily Ratajkowski, who rang in her birthday this year in a gorgeous mermaid-inspired Versace bikini. Donatella Versace even gave the star her stamp of approval, commenting on the model’s post. “The birthday mermaid!!! 🧜‍♀️you look STUNNING 💙💛🧡@emrata,” the fashion designer wrote.

While those couture suits cost a pretty penny, other celebs reach for bikinis a lower price point. Some of their faves come from Frankies Bikinis, Triangl, Boohoo and Cotton:On. 

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Just as the stars like to dress up in super stylish summer suits though, they also like to strip down. Delilah Belle Hamlin and Heidi Klum are among those that have sent temperatures soaring in nearly nothing, taking to Instagram to share topless pics. 

From Paulina Porizkova’s booty-baring bikini to Bella Hadid's strappy brown suit, keep scrolling to see the hottest celebrity bikini moments in 2021!

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While on vacation in December 2021, the actress posted an Instagram Story wearing a floral-print string bikini with a paloma in hand. In a text overlay on the snap, she wrote, "Bikini mode."

“This is 100 percent the hottest self timer pic I’ve ever taken,” the bikini-clad actress captioned a December 2021 Instagram post. “There’s no lame comment where I try to buy back what this is: a mother f—king thirst trap. I love you.” 

Pretty in purple! The actress rocked a high-waisted bikini from Andrea Iyamah, which retails for $210, while on vacation in December 2021. “Magic hour🪄🦄🧞‍♀️🌈,” she captioned her Instagram post. 

Hello, abs! The actress posed for a series of pics in a multicolored bikini in December 2021. As a text overlay on one of the Instagram stories, she wrote, "Mimosas o' clock."

Hot tub time! The bikini-clad singer showed off her fabulous figure (and new bob!) via Instagram in December 2021. “Country reset,” she captioned her post.

While on vacation in Hawaii in December 2021, Lisa Rinna's daughter Amelia donned a floral neon-print bikini teamed with a skort that looked straight out of the early aughts.

A piece of paradise! The model took to Instagram in December 2021 to share a snap from her beach day with Justin Bieber. For the outing, she went with a boho-inspired ensemble complete with a purple Gonza bikini, sheer kimono, knit bucket hat and Frasier Sterling choker necklace.

Soaking it up! The reality star rocked a blue Louis Vuitton bikini and matching cross body bag during her honeymoon with husband Carter Reum in December 2021. 

“#Sliving in Paradise. 🏖👸🏼🩱☀️ My inner Aquarius can’t get enough of this private island 🏝 the ocean 🌊and this tropical oasis,” she captioned her Instagram post. 

Boho babe! The model snapped a mirror selfie in November 2021 wearing a beige bikini top and floral mini skirt, topped with a wide-brimmed beach hat.

Body goals! The Selling Sunset star took to Instagram Stories in November 2021 to show off her zebra-print bikini and insane figure.

Vacation mode! The bikini-clad singer struck a pose while on vacation in Mexico, taking to Instagram to show off her fit figure. “Cabo just brings it outta me,” she captioned a November 2021 post.

The model took to Instagram in November 2021 to post a photo of herself in an itty-bitty white bikini. In the caption, she spoke out about misogynist ageism and used the hashtags "#sexyhasnoexpirationdate" and "agingiscool.

Body goals! The model showed off her incredible abs in an itty-bitty black bikini while on vacation. “Inconsequential pic number one. Day one of resort life and I couldn’t resist posing,” she captioned her November 2021 Instagram post.

Something blue! The Selling Sunset star took to Instagram while enjoying her honeymoon in the Maldives with Tarek El Moussa to show off her custom Karen Sabago bikini.

“This is a special place. And my best friend of 15 years got this bikini handmade for me from the same designer who made my bridal shower dress so it’s also a special bathing suit,” she captioned her November 2021 post.

Wild child! The model showed off her figure in a leopard-print bikini, which she paired with jean shorts. “The jungle is dark but full of diamonds,” she captioned her October 2021 Instagram post.

Despite turning 41 a week prior, the singer's birthday festivities continued while on vacation with friends in the Bahamas in October 2021. She debuted several bikinis on the trip, including this sexy neon pink design.

“From Mexico, with love,” the Desperate Housewives alum captioned her October 2021 Instagram post. In the sun-kissed photo, she rocked an adorable blue bikini by Melissa Odabash.

While on vacation in October 2021, the actress walked an imaginary runway donning an itty-bitty red bikini. She captioned the pic, "Trans Joy."

Picture perfect! Demi Moore’s daughter kicked off her trip to Mexico in style, wearing a sparkly silver bikini and purple silk sarong from Ciao Lucia. “We’ve entered paradise,” she captioned her October 2021 Instagram post.

A whole new world! The bikini-clad TikTok star channeled her inner Ariel, posing on rocks by the ocean. She simply captioned her October 2021 Instagram post with a string of mermaid emojis. 

In October 2021, the He's All That star snapped a mirror selfie wearing a black bikini, accessorized with a colorful flower crown.

Goals! In October 2021, the Anomaly Haircare founder spent the "perfect day off" in a red bikini. Note how she chose the perfect lip color to match her statement suit!

Wild child! The model wore an adorable houndstooth-print bikini to swim with sharks in September 2021. “Shark bait hoo ha ha,” Delevingne captioned her Instagram post, referencing a line from the movie Finding Nemo.

Couple goals! Justin Bieber jumped on the opportunity to hype up his wife’s bikini body, sharing a picture of the model in a green suit via Instagram Stories in September 2021. “Sweet n Sexy,” he captioned his post.

A style statement! The TikTok star played with patterns during a September 2021 beach day, wearing a checkered bikini and plaid bucket hat. “That’s what I want,” she captioned her Instagram post.

The photo seems to have received boyfriend Omer Fedi’s stamp of approval as he dropped a black heart emoji in the comments section.

“One last jump for joy before leaping into fall,” the bikini-clad actress captioned her September 2021 Instagram post.

Bring on the bling! The Selling Sunset star gave her little orange bikini from Vip3r a sparkly upgrade. She accessorized the swimsuit with gold rings, body chains and cuffs from Jennifer Fisher Jewelry and Zarianas Jewels. 

Quinn captioned the September 2021 Instagram post, “🍊Orange is the new black🍊.”

“Sundays like this tho…,,” the bikini-clad actress captioned her August 2021 Instagram post, which showed off her fit figure. She accessorized her look with a pair of oversized white sunglasses.

Living large! The bikini-clad Hills alum made the most of summer, relaxing on a yacht with a drink in hand. “It’s a bikini & Bellini kind of life,” she captioned an August 2021 Instagram post. Patridge rocked a black swimsuit from L SPACE and a pink sarong by Swirl Boutique.

Yeehaw! Wearing an upside-down black bikini top and a cowgirl hat to boot, the TikTok star looked insanely trendy — even when she got caught in bad weather. “Uh oh rain time,” she captioned her August 2021 Instagram post. 

Body goals! While on a yacht with her husband, Dwyane Wade, in August 2021, the actress posed for photos rocking a tiny black bikini. She seemingly wore it upside down, a trend that so many celebrities are loving.

Under the sea! The Selling Sunset star channeled her inner mermaid, rocking a yellow bikini and mesh coverup from Pretty Little Thing. “‘What’s that word again?’ - Ariel 🧜🏻‍♀️Also my mom brain👶🏼 🧠,” she captioned her August 2021 Instagram post. 

Fierce and fabulous! The Southern Charm star put her washboard abs on full display while modeling a leopard-print bikini from her August 2021 collaboration with Beach Riot. “I wanna sell what you’re buyin,” she captioned her Instagram post.

You go, girl! The actress showed off her hula hooping skills in a nautical bikini, taking to Instagram in August 2021 to put her moves on full display. “I’m in a twist! 😂,” she comically captioned her post.

“Day off in paradise
Rare but always appreciated
,” the model captioned her August 2021 Instagram post, wearing a little pink and yellow tie-dye bikini.

Ogre, but make it fashion. The Riverdale star took to Instagram Stories in August 2021 to show off her lime green swimsuit from Oseree Swimwear. “Yes to shrek colored bikinis,” she captioned the post.

Fashion forward! The singer showed off her uber-stylish swimsuit game in August 2021, rocking a puff-sleeve blue bikini and orange-tinted sunglasses. “BEEEEEFA,” she captioned her Instagram post, adding an envelope emoji.

One with nature! The singer rocked a high-waisted zebra-stripe bikini during a paddleboard expedition in August 2021. 

“These sea caves take hundreds of thousands of years to form and look how gorgeous they are. Take your time. The majesty within you is forming✨✨✨✨,” Keys captioned her Instagram post.

All about the accessories! The model gave her pink bikini a stylish upgrade, pairing her suit with a Van Kleef and Arpels body chain. “Buon giorno,” she captioned her August 2021 Instagram post, adding a string of emojis.

“Nothin to do nowhere to be,” the singer captioned her August 2021 Instagram post, showing off her paddleboarding skills in a little black bikini.

White hot! The Selling Sunset star soaked up the sun while vacationing in Greece, wearing a little white bikini. “The hat was a solid Mykonos purchase👒🇬🇷🥰,” she captioned her August 2021 Instagram post.

It’s the matching set for Us! The Euphoria star looked super chic in a blue and green marble-print bikini from 437 x The Mayfair Group, which she paired with a color coordinated sarong in an August 2021 Instagram post.

 

 

Drink up! The Selling Sunset star proved she was making the most of her European vacation, posing in a little pink bikini from Frankies Bikinies next to a jumbo-sized Grey Goose vodka bottle. 

“‘Trust me, you can dance!’ - Vodka,” Stause captioned her August 2021 Instagram post.

From her ‘70s-inspired sunglasses and straw hat to layered necklaces, the model put a chic spin on her swim style in July 2021. “You can’t be a pirate without the booty,” Delevingne captioned her Instagram post.

Faith, luck and a little pixie dust! The bikini-clad singer was happy-go-lucky in July 2021, celebrating the release of her new song, “You for Me.”

“I woke up this morning to so much love on mine and @sigala song You for Me. All I can say is I can’t stop smiling from happiness. Thank you for making me smile today,” she captioned her Instagram post, adding a Tinkerbell emoji.

Bringing back the belly button ring! The “Levitating” singer took to Instagram Stories in July 2021 to show off her piercing, wearing a tie-dye bikini.

Nothing but neon! The model shared a steamy snap via Instagram Stories in July 2021, showing off her amazing figure. “Uh no … Where is she going … thirst,” she captioned her Instagram post.

Mermaid mode! The House of Gucci actress looked cool as can be in an orange star-shaped bikini, taking to Instagram to show off her suit. “Little starZ,” she captioned the July 2021 post. 

Out of office! The Pitch Perfect star snuck in some rest and relaxation in July 2021, taking to Instagram to share a very cheeky mirror selfie. “Been on DND … ✌🏼👙🏝🌺✨,” she captioned the post. 

Party time! The Selling Sunset star kicked off her 40th birthday celebrations in July 2021 by dancing around in a tie-dye bikini to the beat of Megan Thee Stallion’s “Body.” She captioned her Instagram Stories: “This is what will happen if you invite me to your property.”

Bucket hats and bikinis! Days after explaining the “awful” things people were saying about her body, the singer took to Instagram to show off her figure. “#Cheers,” she captioned her July 2021 post.

One with nature! The country singer got in touch with her outdoorsy side, rocking a little zebra-print bikini while fishing. “Feeeeeeshies! 🐟🐟🐟#CatchAndRelease #JustSayinHi #Outdoors #LakeLife,” she captioned her July 2021 Instagram post. 

Good vibes only! The actress looked like a ray of sunshine in a little yellow bikini while on vacation in July 2021. “Here comes the 🌞👉🏾,” she captioned her Instagram post.

A summer mood! The actress was all smiles jumping in the ocean in a little nude bikini. “Little late for #NationalBikiniDay but just gonna leave this right here👙,” Longoria captioned her July 2021 Instagram post.

Good 4 her! In July 2021, the singer took to her Instagram Stories to show off her amazing abs and cute suit from Frankies Bikinis. She wore the brand’s Tatum Terry Triangle Bikini Top, $80, and Tia Terry String Bikini Bottom, $80.

The Poosh founder flaunted her curves in a strappy bikini in honor of Independence Day in July 2021.

The professional dancer showed off her moves and her itty, bitty yellow bikini while on vacation in Italy in July 2021.

Bling and bikinis! The singer soaked up the sun during her vacation in Italy, sharing a picture of her toned body via Instagram in July 2021. She paired her patterned bikini with a dainty criss-cross body chain.

Vacation mode! The model took to Instagram in June 2021 to share a series of snaps, including a sexy bikini pic from her Greece getaway with husband Justin Bieber.

Baldwin was the epitome of summer style, pairing her shimmery green swimsuit from Triangl with layered gold necklaces and hoop earrings.

Too hot to handle! The model showed off her insanely toned physique in an itty-bitty bikini, which she accessorized with a gold body chain. “Today was a hot one 🌞….. time to cool off💦,” she captioned her June 2021 Instagram post.

A ray of sunshine! The actress looked unbelievable in a sporty yellow bikini, sharing a picture via Instagram in June 2021. “Happy Summer,” she captioned the post.

Stripping down at sunset! The model took off her bikini top for a sexy (and very sandy) beach photo shoot in June 2021, sharing the pictures via Instagram.

Bring on the bling! The model showed off their glitzy belly ring in a metallic green bikini, sharing the sexy snap to Instagram. “Forgiveness is everything #mindfulness,” Stodden captioned the June 2021 post.

Work it, girl! The model let loose on vacation, jumping around and twerking in a little tie-dye bikini, which she accessorized with reflective sunglasses and a smiley face baseball cap. “Hello Monday 😁,” she captioned her June 2021 Instagram post.

Rosé and relaxation! The Fabletics founder made the most of a sunny day, hitting the beach in a little bikini with two bottles of wine in tow. “Feels like summer☀️😜,” she captioned her June 2021 Instagram post.

Vacation mode! The Uncommon James founder looked tanned and toned in an itty-bitty white bikini while on vacation in Mexico. She simply captioned her June 2021 Instagram post with a peace sign and sun emoji.

Sipping something sweet, but feeling salty! The actress gave Us all the summer vibes, sipping on a glass of rosé while lounging by the pool in a teeny floral-print bikini. “🧂-y,” she captioned her June 2021 Instagram post.

Giddy up! The “Levitating” singer looked effortlessly cool, pairing her little red bikini with a gingham Miu Miu bomber jacket, jean shorts and cowboy boots. “Having a cowgirl moment,” she captioned her June 2021 Instagram post.

“Oh Louis my love 💙🥶🦋🐬🧢,” the Game of Thrones actress captioned her June 2021 Instagram post, wearing a striped bikini with Louis Vuitton Bermuda shorts and a blue denim jacket.

Ariel, is that you?! The model stunned in a mermaid-inspired Versace bikini from the brand’s Spring Summer 2021 runway collection while celebrating her 30th birthday. She simply captioned her June 2021 Instagram post with a mermaid emoji. 

Donatella Versace even gave Ratajkowski her stamp of approval. “The birthday mermaid!!! 🧜‍♀️ you look STUNNING @emrata 💙💛🧡,” she wrote.

Summer is in session! The TikTok star showed off her curves in a paisley-print bikini from Nessy Swimwear, wearing her top upside down. “Thank u next 💎,” she captioned her June 2021 post.

Splish splash! The Full Plate author showed off her insanely toned abs in a little snakeskin bikini while on vacation in Mexico with husband Stephen Curry. “That concludes Cabo R and R! Until next time … 🌊,” she captioned her May 2021 Instagram post.

Watch out for the wine! The “Born This Way” singer soaked up the sun — with a glass of white in tow — in an itty-bitty blue bikini. She simply captioned her May 2021 Instagram post, “🧜‍♀️.”

Vacation mode! The Footloose star stunned in a little green bikini and crochet cover-up while enjoying the Costa Rica beach. “Feelin’ fancy and free in this sage green ‘cover’ up … not that it’s covering much 🤷🏼‍♀️😉,” she captioned her May 2021 Instagram post, prompting people to share when they “feel the most free.”

She added her response: “It’s definitely when I’m dancing and embracing the natural elements surrounding me!”

Cowgirl chic! The DNA founder accessorized her adorable yellow bikini from Cotton:On with a western hat, hoop earrings and charcoal button up. “Peaceful moments in my garden wearing @cottonon_usa recycled bikini,” she captioned the May 2021 Instagram post.

Beach days! The model showed off her amazing figure in an adorable white bikini that had her 4.8 million followers requesting the deets. “Going to link this bikini for you guys asking,” she captioned her May 2021 Instagram, adding a swipe up to a $6.40 bikini from Boohoo.

Groovy, baby! The actress dressed up her pink patterned bikini with a pair of thigh-high green leather boots, chunky necklaces and studded sunglasses, sharing the look via Instagram Stories in May 2021.

Make a wish! The Hills: New Beginnings star soaked up the Hawaii sun while celebrating her 36th birthday in May 2021, looking stylish in a French-cut nude bikini.

Hot girl summer! The Midnight Sun actress rocked a little blue and white tie-dye bikini for a day spent yachting with fiancé Benjamin Mascolo in May 2021.