Kate Bosworth: Big Woman on Mulberry Street

Kate Bosworth keeps it casual at the Mulberry pool party celebrating the Fall/Winter 2010 Collection at Chateau Marmont on Tuesday night (July 20) in Los Angeles.

British personality Alexa Chung was the DJ for the night, spinning fun songs all night long.

Also in the house: 90210 co-stars Shenae Grimes and Jessica Stroup, who are back in town to shoot the new season of their CW drama. So You Think You Can Dance host Cat Deeley, Brothers & Sisters actor Matthew Rhys and Kelly Osbourne were also in attendance.