Caught in the Act!

Originally posted Friday January 25, 2008 06:00 AM EST

Kristin Cavallari Photo by: Agent 47 / WENN

• A casually dressed Kristin Cavallari, who recently turned 21, stopping in for a beauty treatment at the Anastasia Beverly Hills salon.

• A glowing Jennifer Lopez, doing a little shopping at Giggle, the trendy baby store on New York's Upper East Side. "She was so nice, just a delight," a store insider says of the happy mom-to-be, who picked up two Maxi Cosi car seats, two sets of CozyChic blankets, cardigans and hats, and lots of Mustela baby care products.

• Brothers & Sisters stars Dave Annabelle and Emily VanCamp, holding hands as they walked through Motorola's Late Night Lounge in Park City, Utah, on their way to join B&S castmate Matthew Rhys in a booth. Rhys later hit the dance floor, staying well past 3 a.m., which is when Black Eyed Peas frontman Will.i.am arrived to party.

• Charlize Theron, lunching with three friends at Robert Redford's son's eatery Zoom on Main Street in Park City. The actress, in town to promote her film Sleepwalking, towered above the crowd in a caramel turtleneck, skin-tight pants, a knit hat and black leather ankle boots as she did a circle around the room. It was Tony Hawk who caught her eye, as Theron grabbed the arm of his ski jacket to ask the pro-skateboarder to pose for a picture.

Paris Hilton and Terrell Owens Photo by: ENEWSBUZZ

• Paris Hilton, partying like a rock star with Dallas Cowboy's wide receiver Terrell Owens at the Ghost Bar on the 33rd floor of the W Hotel in Dallas, following the premiere of her movie The Hottie & the Nottie. The heiress sipped mojitos and munched on Kobe sliders and rock shrimp from N9NE Steakhouse, which made a special delivery just for the occasion. As for Owens, an insider tells us he and Hilton exchanged numbers.

• By KRISTEN MASCIA, MARISA LAUDADIO, MARY MARGARET, KELLY RONDEAU

Thursday's Caught in the Act >