Mischa Barton, enjoying a girls' night out with three pals at L.A.'s Hyde Lounge. The ladies had mixed drinks and "were chatting, having fun and pretty much just kept to themselves – not giving any men any attention," an onlooker tells us. Also making the scene: Lindsay Lohan, who slipped into the deejay booth to scope out the crowd.
Adam Brody, lunching with a male companion on the patio of Hollywood eatery Off Vine. The former O.C. star, dressed down in aviator sunglasses and a slim gray T-shirt, was "waving his hands excitedly, telling story after story," says a fellow diner.
Heath Ledger, playing dutiful dad as he struggled to get 17-month-old daughter Matilda's stroller up the stairs at his London hotel. The duo is in town while Ledger's ladylove Michelle Williams films her new movie Incendiary with costar Ewan McGregor.
By MAUREEN HARRINGTON, MARY MARGARET and COURTNEY RUBIN
Thursday's Caught in the Act >