02/14/2008 AT 06:00 AM EST
, celebrating her 20th birthday with a
bash – and cupcake fight! – at Les Deux in Hollywood. "There was
frosting all over Rihanna's face and the group was hysterically laughing to
the point of almost tears," a guest tells us. When partygoers (like
and Wilmer Valderrama
flinging cupcakes, they offered a standing ovation after Chris
sang an a capella version of "Happy Birthday." While Brown has
denied that he and the birthday gal are dating ("We're just friends ... we
hang out," he told PEOPLE at a post Grammy party), a party
guest tells us the two were cuddling and acting "very cozy all night."
, putting herself up for sale in Las
Vegas as part of the Power of Love gala, which raises money for Alzheimer's
and memory disorders. The Desperate Housewife sold for $50,000 to
one lucky bidder, who will get to take her on a lunch date.
and Ginnifer Goodwin,
together at Nashville's famed Loveless Café. Chowing down on
Southern specialties for the second time in a week, Klein tucked into the
restaurant's famous homemade biscuits and the breakfast plate of barbecue
pork with eggs.
J.Graylock / JPI
, checking out the Rhett Miller show at
the Troubadour in Los Angeles. According to a fellow concertgoer, the
actress, sporting all black, looked happy to be out.
, dining with friends on oysters and
salmon at The Plaza Café in Southampton, N.Y.
By EILEEN FINAN, JENNIFER GARCIA, MARK GRAY, MARY MARGARET, JEFFREY
SLONIM and CYNTHIA WANG
Wednesday's Caught In the Act >