updated 01/11/2011 AT 3:00 PM ET
•originally published 01/12/2011 AT 6:00 AM ET
Jessica Alba fêted her hubby Cash Warren with a lively birthday bash at Spin Hollywood inside the Mondrian Hotel. The group enjoyed cocktails and plenty of ping pong – as well as tunes by DJ Jedi. Warren, who turned 32, also got a ping pong-themed birthday cake and the well wishes of pals like Baron Davis and Benji Madden.
Meanwhile in San Diego, Jessica Biel celebrated a pal’s 30th birthday at Fluxx. Biel kept a low profile at their VIP table inside the nightclub, staying covered up with a scarf while sipping on her vodka soda as her friends hit the dance floor.
Oscar winner Charlize Theron enjoyed dinner with friends at Loteria Grill in Hollywood. The actress was the center of attention, chatting with pals and sipping a margarita during her meal.
Was he buying mom-to-be Mariah a gift? Nick Cannon was spotted stocking up on sweets at the Sugar Factory inside Las Vegas’s Planet Hollywood Resort & Casino with choreographer pal Robin Antin. The two posed for pictures with fans, and Cannon couldn’t keep his hands off the pear-flavored Jelly Belly candies.
Stephanie Pratt, pampering herself with a spray tan at Brazil Bronze Glow Bar in New York’s SoHo neighborhood, followed by a blowout at the Chris Mitchell Salon.
By KRISTIN BOEHM, JENNIFER GARCIA and JESSICA WEDEMEYER