Star Tracks: Monday, May 5, 2014

Are they or aren't they? Amid rumors they may have married this weekend, Kim Kardashian and Kanye West stay in cahoots on a dinner date Sunday in downtown N.Y.C.

Lady Gaga

Good weekend, Jessica? Simpson and fiancé Eric Johnson arrive at LAX on Sunday, after attending the White House Correspondents' Dinner in Washington, D.C.

Cowabunga! Liam Hemsworth spends some time at the shore with brother Luke (not pictured) on Sunday, enjoying a surf outing in Malibu, Calif.

It's ladies' night for these blonde beauties! Taylor Swift mingles with Kate Bosworth and new BFF Karlie Kloss at Harry Josh's Annual HairBall Party Saturday in New York City.

Also at Saturday's HairBall Party: Gisele Bündchen, who cozies up to costumed husband Tom Brady.

That looks delicious! Kate Hudson snacks on some fresh watermelon while on the beach in Malibu, Calif., on Sunday.

Another day, another joint hike for Nicole Richie and Cameron Diaz (plus her pup!), who squeeze in an afternoon workout in Beverly Hills on Sunday.

Naomi Watts brings along her sons Sasha, 6, and Kai, 5, plus a pal for a roaring good time at Sunday's Come Make Art: Children's Museum of the Arts Spring 2014 Benefit in New York City.

Hey, no peeking! Comedic couple Nick Offerman and Megan Mullally continue their onstage antics at Sunday's Lucille Lortel Awards in New York City.

They're getting the creative juices flowing! Maggie Gyllenhaal and her mother Naomi Foner Gyllenhaal put their heads together at Pioneer Works' First Annual Village Fête in Brooklyn, N.Y., on Sunday.

America's Got Talent host Nick Cannon flexes his balletic muscles while filming the show in Santa Monica, Calif., on Sunday.

A sparkly Shakira shakes it up on Saturday while shooting a T-Mobile ad in Los Angeles.

Lea Michele leaves her ruby slippers behind for Saturday's Westwood, Calif., premiere of her new animated musical, Legends of Oz: Dorothy's Return. "I think it's so important to love yourself inside and out," she told PEOPLE.

Hugh Jackman takes his Pan preparation seriously, practicing his saber skills in Hudson River Park in N.Y.C. on Saturday.

Mila Kunis lets her growing baby belly lead the way around Hollywood on Saturday.

Andy Cohen and Emma Stone snap a selfie for a good cause at Saturday's EIF Revlon Run/Walk for Women in N.Y.C.

So that's where she gets her style sense! Lupita Nyong'o and her mother, Dorothy, make Saturday's annual Garden Brunch a fashionable affair ahead of the White House Correspondents' Dinner in Washington, D.C.

Charlize Theron and beau Sean Penn take their relationship one step at a time Saturday during a hand-in-hand stroll through L.A.

Naomi Watts commands the spotlight with her bright ensemble at Saturday's 25th Annual GLAAD Media Awards in N.Y.C.

It's a double date for Matt Damon and wife Luciana, joined by Cindy Crawford and husband Rande Gerber, at Saturday's Planes of Fame Air Show in Chino, Calif. "Anyone who has met Amal [Alamuddin] isn't surprised, and we're all really excited for him," Damon told PEOPLE of pal George Clooney's recent engagement.

Pete Wentz and Meagan Camper bring a special guest – their baby on the way – to Saturday's Kentucky Derby in Louisville.

Before heading on tour together this summer, power couple Jay Z and Beyoncé enjoy some quality time together on Friday watching the Brooklyn Nets trounce the Toronto Raptors 97-83 at the Barclays Center in Brooklyn, N.Y.

No signs of crisis here! Scandal stars Katie Lowes and Guillermo Diaz are all smiles as they celebrate Friday's PEOPLE/TIME White House Correspondents' Dinner Cocktail Party with World's Most Beautiful woman Lupita Nyong'o in Washington, D.C.

"What's it like to be Oprah's BFF?" That might be what Mad Men star Jessica Paré is thinking as she chats with Gayle King at the PEOPLE/TIME cocktail party on Friday.

Looking dapper – even in his signature headgear – at Friday's PEOPLE/TIME party, Duck Dynasty star Willie Robertson snuggles up to wife Korie.

Veep's Anna Chlumsky and Scandal's Darby Stanchfield strike a pose at the PEOPLE/TIME party Friday at D.C.'s St. Regis Hotel.

After opening up about their steamy sex life, Chrissy Teigen keeps things red hot as she steps out with husband John Legend at Friday's PEOPLE/TIME party.

What baby bump? An expectant Christina Aguilera keeps her growing tummy under wraps as she performs at Friday's New Orleans Jazz and Heritage Festival.

Can't slow down this busy lady! Jessica Alba keeps hydrated as she heads into her Honest Company offices in Santa Monica, Calif., on Friday.

Looks like he's having a wheely good time! Hugh Jackman puts the pedal to the metal during a bike ride through New York City on Friday.

Alyson Hannigan is spotted – literally! – on a Friday shopping trip in sunny Santa Monica, Calif.

Rita Ora makes her way through a crowd of adoring fans as she leaves her N.Y.C. hotel on Friday.

Justin Bieber seems to be heeding Smokey Robinson's advice – be kind to your fans! – on Friday in N.Y.C., where the singer obliges an admirer with a selfie.

Joshua Jackson and gal pal Diane Kruger stick close together while strolling around N.Y.C. on Friday.

Pregnant Stacy Keibler stays in fine form in a hoodie and workout pants as she steps out Friday in West Hollywood.