NEW: Snapatomy! Star Photo Facts Revealed

At her first live performance, Heidi Montag lip-synced her way through her new single, "Body Language," at Sunday's Miss Universe pageant. ROLL OVER photo to reveal more!

Marc Jacobs has dressed everyone from Victoria Beckham to Kate Moss, but his biggest diva yet may be the Muppet fashionista herself, Miss Piggy. The two collaborated last week in his New York City showroom. ROLL OVER photo to reveal more!

Lindsay Lohan and Sean "Diddy" Combs chat at Waverly Inn after the premiere of the fashion documentary The September Issue in New York City on Wednesday. ROLL OVER photo to reveal more!

New Moon hunk Kellan Lutz takes some time out to shop between shooting Eclipse in Vancouver, Canada, on Tuesday. ROLL OVER photo to reveal more!

At the close of her daylong Twitter scavenger hunt Monday, Britney Spears revealed herself to eager fans on a double-decker sightseeing bus in New York's Times Square. ROLL OVER photo to reveal more!

Kim Kardashian's mom Kris Jenner takes her tween daughters Kylie and Kendall (not pictured) shopping in Beverly Hills with family friend Kathie Lee Gifford and her daughter Cassidy (not pictured). ROLL OVER photo to reveal more!

With the help of his 5-year-old sextuplets, Jon Gosselin sets up a lemonade stand to raise money for his local Reading, Pa., fire station on Monday. ROLL OVER photo to reveal more!