Rose Walano

The Metropolitan Museum of Art Costume Institute Gala 2015 is on May 4, but before it takes place, Us Weekly is taking a look back at last year's best styles; see them all in video here!

Kate Middleton's buttercup dress, worn at the royal baby reveal on May 2 in London, was nothing short of lovely; shop the look for less here!

Work it like a royal! Just hours after giving birth, Kate Middleton stunned with a bouncy blowout and rosy cheeks at her royal baby's reveal in London on May 2; see the glam photos

Prince William brought Prince George to meet his newborn little sister at St. Mary's Hospital in London on May 2, and he chose to match his son for the occasion! See their royal baby style here

Kate Middleton and Prince William welcomed the new royal baby, a princess, on May 2; will the Duchess once again be inspired by Princess Diana for her second royal baby hospital exit outfit? See our predictions

As seen in an Instagram selfie, Allison Williams rocked some '90s lip liner on the set of Girls on May 1, meaning that there are some bold beauty choices ahead for Marnie in season 5; see the photo here!

Eva Longoria served as a bridesmaid in a close friend's wedding in Cordoba, Spain, on May 1, and she donned a lovely blue-green chiffon dress for the occasion; see it here

Sofia Vergara, Joe Manganiello, Reese Witherspoon, and Witherspoon's niece Abby James all attended the L.A. premiere of Hot Pursuit on April 30; see the adorable and hilarious pics here

Ditching her trademark brunette locks, Megan Fox rocked a blonde bob on the set of Teenage Mutant Ninja Turtles on April 30 in NYC; see the dramatic makeover here!

Elizabeth Hurley attended the annual Breast Cancer Research Foundation's Hot Pink Party on April 30 in NYC, where she accidentally flashed her booty in her blush dress; see the wardrobe malfunction photos!

Jennifer Lopez, Roselyn Sanchez, and more stars steamed up the red carpet at the Billboard Latin Music Awards 2015 in Miami on April 30; see the best-dressed ladies here!

Amal Alamuddin addressed the press in Washington, D.C., on April 30, wearing a classic business suit; see her latest professional style here

Chrissy Teigen, Fergie, and more leggy celebs of all ages show you how to rock short shorts for the season; read on for the summer style tips!

Khloe Kardashian's hairstylist, Jen Atkin, lost her hair kit on a flight on April 27, so she rushed to the drugstore and put together the perfect glam kit for just $100; find out which products she grabbed here

Responding to Protein World's body-shaming "Are you beach body ready?" ad, Swimsuitsforall tapped plus-size model Ashley Graham to pose in response to the body-shaming campaign; see the ads here

In honor of Denim Day, Kendall Jenner shared a photo of herself flashing a peek at her booty via Instagram on April 28; see the sexy photo here!

Kendall and Kylie Jenner stepped out for lunch together on April 28, in L.A., and each sister rocked her own take on the crop top and athleisure trend; vote for who wore it best here!

Kate Hudson rocked her fierce ab muscles and toned body while modeling her Fabletics line in L.A. on April 28; see the sexy body photos here!

Amal Alamuddin stepped out in NYC on April 28, working a cute jeans ensemble for daytime and a floral dress for dinner; see them both, styled to perfection, here!

Jennifer Aniston stepped out in NYC on April 28, rocking head-to-toe black—and making it look anything but boring; check out her crisp street style here

Khloe Kardashian rocked a fedora with a tailored coat and ankle-strap heels while flying out of Los Angeles on April 27; see how she reworked the ensemble the next day in photos