The Hills star Audrina Patridge was spending a day at the beach - and also working! She got her first movie role and here she is, in character, in a green bikini in Hawaii on Thursday. Now that's the life ...

A (gulp) Audrina Patridge bikini photo...

The 23-year-old reality TV star shot scenes for the direct-to-DVD film The Reef, the sequel to Into the Blue (Jessica Alba, Paul Walker).

Audrina Patridge plays a beach beauty whose boyfriend spoils her rotten. Gotta be a nice departure from Justin-Bobby, who... well, you know.

Pal Lauren Conrad has said of Audrina's new movie role:

"I'm so proud of her! She moved to L.A. to become an actress and it's so exciting to see it really happening to her."