Spears and her model-actor friend Isaac Cohen form a cozy duo in Hollywood. Plus: Jennifer Hudson, Rachel Bilson and more

8 of 17

KEEPING BUSY

With extra time on her hands since the cancellation of both The O.C. and her romance with Adam Brody, Rachel Bilson makes the most of her downtime by attending a Chanel launch party at the Chateau Marmont in Beverly Hills on Thursday.