Jennifer Lawrence at Silver Linings Playbook Screening in LA

Jennifer Lawrence stepped out in a short Christian Dior dress for her Silver Linings Playbook premiere in LA last night. She was joined on the red carpet by a Gucci-clad Bradley Cooper. The co-stars have been spending a lot of time together promoting the film. Over the weekend, Jen and Bradley linked upfor a special SAG screening of the film, is released in Australia on Jan. 31.

Also in attendance for last night's premiere was Jennifer and Bradley's co-star Chris Tucker and director David O. Russell. Chris told us all about making the film and touched on the amazing rapport between Jennifer and Bradley. He said, "It was great because they had so much good chemistry . . . David O. Russell is a great director. He had a great cast with Jennifer, Bradley and Robert De Niro, and Jacki Weaver."

Additional reporting by Lindsay Miller