Star Tracks: Monday, April 23, 2012

Kristen Stewart flashes a smile while winding down Sunday at Coachella's final day of live music in Indio, Calif.

See who else hit up Coachella right here!

Winning the 2012 London Marathon on Sunday may have been the second-most exciting thing to happen to Mary Keitany and Wilson Kipsang of Kenya – after all, they had their trophies presented to them by dashing Prince Harry, who joked his brother Prince William and sister-in-law Kate would be running the race next year.

Victoria Beckham goes for a stroll Monday with baby Harper in Beijing, China, where she's set to launch a new limited-edition Range Rover.

Wait, that's definitely not Selena Gomez nuzzling with Justin Bieber! Luckily the pop star was just filming the video for "Boyfriend" in downtown L.A. on Saturday with a Gomez look-alike as his real-life girlfriend looked on.

Doing his part for Earth Day, The Vampire Diaries star Ian Somerhalder happily assists with clean-up at a Santa Monica, Calif., beach on Saturday.

A still bandaged Miley Cyrus shows off her enviable midriff during a Saturday workout with pup Floyd in Studio City, Calif.

Mother-daughter team Jada Pinkett Smith and Willow, 11, are ready to take in a performance of the ballet documentary First Position in Santa Monica, Calif., on Sunday.

Heidi Klum proves she's a hands-on mom while out with her children – including Lou, 2½, and karate kid Leni, 7, – in Los Angeles on Saturday.

Kim Kardashian and Kanye West have something to smile about! The couple take their romance for a stroll in New York City on Saturday.

The day before, Kim Kardashian flaunted her famous figure in a body-hugging minidress while promoting the family's Kardashian Kollection for Sears Friday in Hoffman Estates, Ill.

Looking to put her Paris gun incident behind her, a low-key Pippa Middleton heads to a London hair salon for a Friday afternoon appointment.

Former Bachelor contestant Melissa Rycroft snuggles up to hubby Tye Strickland during a Friday appearance on Good Morning America in New York City, where they promoted their CMT reality show, Melissa & Tye.

Another day, another transformation! Nicki Minaj continues to explore her color palette with a florescent ensemble while leaving her London hotel on Friday.

Hilary Duff tries to go incognito after a coffee run Friday at The Coffee Bean in Toluca Lake, Calif.

No Wilmer, no problem! A casually chic Minka Kelly steps out in West Hollywood Friday to do some solo shopping.

Hard to disguise the identity of this pop star! Preparing for her upcoming world tour later this month, Lady Gaga passes through Gimpo International Airport in Seoul, South Korea, in Atelier Versace and a pearl-studded mask on Friday.