The singer looked stunning in silver as she joined fiancé RUSSELL BRAND at the LA premiere of Get Him To The Greek. And the loved-up pair, who met on the set fo the movie, were joined on the red carpet by another A-list couple, ZAC EFRON and VANESSA HUDGENS. The star-studded bash was appropriately held at The Greek, the theatre mentioned in the title of the film. JONAH HILL stars as an unfortunate minder charged with getting Russell's wild rocker Aldous Snow to the famous LA venue.

The movie contains a host of cameos from stars including PINK, CHRISTINA AGUILERA and Harry Potter star TOM FELTON. But Katy's first snog with Russell ended up on the cutting room floor and Russell admitted that "it might be because it would seem kind of cheesy to have her and I in the movie together".