Star Tracks: Friday, May 25, 2012

Orange you cute?! Sporting an eye-popping frock, Pippa Middleton stylishly attends the wedding of a family friend in London on Friday.

Britney Spears flashes a mile-wide grin for the adoring crowd as she arrives for her first day at work on the set of The X-Factor in Austin, Texas, on Thursday.

Hands-on mom Mariah Carey and her bashful baby boy Moroccan, 1, make their way through Morocco's Rabat Airport on Friday. The singer is slated to perform Saturday at the MawazineWorld Rhythms Festival.

Kourtney Kardashian doesn't let her burgeoning baby bump get in the way of enjoying a leisurely stroll with Scott Disick and 2-year-old son Mason Thursday in Malibu, Calif.

Braving the Big Apple mist, Madonna and boyfriend Brahim Zaibat sport matching raingear Thursday in New York.

After returning to Playboy, Jenny McCarthy debuts linebacker beau, Brian Urlacher, at her Rescue Our Angels Fundraiser Thursday in Chicago, where she raised money for her charity, Generation Rescue, benefitting families affected by autism.

Country cutie Taylor Swift adds a colorful touch to her spring ensemble for a lunch date Thursday afternoon in L.A.

Kate Bosworth only has eyes for boyfriend Michael Polish as they arrive for a Calvin Klein exhibit at Seoul's New Museum of Contemporary ArtThursday in South Korea.

An exuberant Wendy Williams and husband Kevin Hunter get the party started Thursday at a bash celebrating the 500th episode of her eponymous talk show in New York City.

Jessica Alba and her giddy daughter Honor, 3, make a stylish arrival to school Thursday in Santa Monica, Calif.

Following an affectionate date night with Kristen Stewart, Robert Pattinson hits the promotional trail for his new film, Cosmopolis, Thursday at the Cannes Film Festival.

Also at Cannes: Heidi Klum and Kim Kardashian, who happily cross paths while attending the amfAR Cinema Against AIDS benefit Thursday, held at the Hôtel du Cap-Eden-Roc in Cap d'Antibes, France.?

So excited – and she just can't hide it! Violet Affleck, 6, flashes a winning smile alongside mom Jennifer Garner in Santa Monica, Calif., on Thursday.

From one red carpet stunner to another, Matthew McConaughey holds tight to his dazzling fiancée Camile Alves while attending the Cannes Film Festival premiere of his latest film, The Paperboy on Thursday.

Hunger Games heroine Jennifer Lawrence tries to go incognito while making her way through London with boyfriend Nicholas Hoult (not pictured) on Thursday.

The spark's still there! Despite parting ways in March, Eva Longoria and Eduardo Cruz have their hands full Thursday as they depart from Marbella, Spain.