Gucci introduced their new watch and jewelry brand ambassador Florence Welch during a conversation moderated by Alexa Chung at Redbird in L.A. Credit: Charley Gallay/Getty Images for Gucci

—Gucci introduced their new watches and jewelry brand ambassador Florence Welch during a conversation moderated by Alexa Chung at Redbird in L.A.

Rachel McAdams chowed down on lobster rolls at SALT restaurant at The Marina Del Rey Hotel.

Justin Bieber chatted with Usher as Kourtney Kardashian huddled with sister Khloé in another section at Michael Utsinger’s Grammy afterparty at The Nice Guy in L.A.

Bachelor Nation's Nick Viall, JJ Lane, Jared Haibon, Ben Zorn and more of the franchise’s alums auctioned themselves off to bidders at Ashley Iaconetti and FlockU's Biggest Group Date Ever, which raised more than $30,000 for pediatric cancer, at The Ainsworth in NYC.

Bradley Cooper enjoyed steaks and a bottle of red wine with Bob Weinstein at Strip House in NYC.

Vanessa Lachey wore Michael Cinco to the Grammy Awards in L.A.

Rosanna Arquette attended the “Modern Day Slavery in America and Abroad” panel at the Visionary Women Salon event at the Montage Beverly Hills.

Chris Rock danced with a glass of champagne next to Lorde and Skrillex at Joi Brown’s Culture Creators pre-Grammy’s event at Henry’s in L.A.

—After performing during halftime at a Bulls game, Grammy-winning group All-4-One dined at RM Champagne Salon in Chicago.

DJ Cassidy spun tunes for Leonardo DiCaprio and Hailey Baldwin following the annual amfAR Gala at 1 Oak in NYC.

Chris Cornell snapped a selfie at the Saint Laurent fashion show at the Palladium in Hollywood.

Nicky Hilton and Nicole Scherzinger attended the Thomas Wylde fashion show in NYC.

—Model Samantha Hoopes attended the Schick Hydro Barbershop at the launch of this year’s Sports Illustrated Swimsuit Issue in NYC.

Future checked out the NBA All-Star Game Party hosted by messaging app Viber and YesJulz at La Vie Complex in Toronto.

Snoop Dogg and 2 Chainz hosted a charity basketball game to benefit the Snoop Youth Football League, T.R.U. Foundation and United Way of Peel Region in Toronto.

Gigi Hadid caught up with Karlie Kloss at the IMG Models Celebrates The Sports Illustrated, Swimsuit event at Vandal in NYC.

Lady Gaga wore The Office of Angela Scott oxfords while getting a tattoo of David Bowie’s face in L.A.

Bachelor In Paradise’s Jade Roper and Tanner Tolbert shared a slice of their wedding cake designed by Sweet E's Bake Shop at The St. Regis in Dana Point, California.

Emmanuelle Chriqui worked out at barre studio Physique 57 in Beverly Hills.

Rita Ora wore David Yurman Jewelry to Katy Perry’s The Creator’s Party in L.A.

Katherine McNamara sat front row with Arden Cho during the MILLY Fall 16 NYFW Runway Show.

Robin Thicke wore a Hickey Freeman jacket while performing with Pitbull on The Tonight Show Starring Jimmy Fallon in L.A.

AnnaLynne McCord was all smiles as she attended the Colgate Optic White Beauty Bar sponsored by Lipton Sparkling Tea in L.A.

J.J. Abrams introduced his latest project, 11.22.63, at the premiere screening at the Bruin Theater in L.A.’s Westwood neighborhood.

Sarah Hyland and Dominic Sherwood enjoyed a night out at Emporio Armani Sounds, celebrating the brand’s new boutique, in L.A.

Zendaya rolled up in an Escalade to the Essence Black Women in Music celebration at Avalon in Hollywood.

James Harden snacked on Trolli Sour Brite Weird Beards before the big 2016 NBA All-Star Game in Toronto.

Richie Sambora and girlfriend Orianthi attended the ASCAP Grammy Nominees Cocktail Party at the SLS Hotel in Beverly Hills.

Elle King posed with her fiancé, Fergie, at the Billboard Power 100 Celebration at Bouchon in Beverly Hills.

Russell Wilson brought girlfriend Ciara to Hennessy V.S.O.P. Privilege Cognac’s Pre-Grammy Dinner at Ysabel in L.A.

Rashida Jones and boyfriend Ezra Koenig cuddled up on the dance floor at The dFm Presents: A Grammy Celebration at The Roosevelt in Hollywood.

Courteney Cox and Matt LeBlanc presented Friends creators David Crane and Marta Kauffman with the Paddy Chayefsky Laurel Award at the Writers Guild Awards in L.A.

Jeff Timmons attended the CITY Gala at the Playboy Mansion in L.A.

Joe Simpson and Lance Bass sat front row for the Control Sector show at Style Fashion Week in NYC.

Muscle Milk-sponsored athlete Sara Hall was a contender at the Olympic Trials Marathon women's race at L.A. Live in Downtown L.A.

—Actor Jimmy Jean-Louis picked up items from American Hat Makers and LifeCell Skincare at the BoomCase-sponsored GBK Pre-Grammy Luxury Suites at Tom’s Urban in Downtown L.A.

Michelle Branch and Patrick Carney stuck close together at the Universal Music Group Grammys Afterparty at The Theatre at Ace Hotel in L.A.

Miranda Kerr cozied up to boyfriend Evan Spiegel at the Warner Music Group Grammys Afterparty at Milk Studios in Hollywood.

—Father/son duo Donald and Kiefer Sutherland attended the premiere of their film Forsaken at the Autry Museum of the American West in L.A.