Lily Allen goes all see-thru in a floor length black halter gown.

Singer Natalie Imbruglia surfaces in this colloquial gray frock, textured with an oversized brooch.

Guy Ritchie keeps it smooth in sharkskin with a wide tie and 30s cut black leather belt.

Kelly Osbourne continues to show off her evolving DWTS body in a black mini with cascading flower detail, ruby clutch and spiked Christian Louboutins.

Mickey Rourke keeps with the men of the evening’s theme of monochromatic, his signature scarf and cigarette in tow.

Gavin Rossdale’s spawn Daisy Lowe looks all-grown-up in a metallic sheath (sans her ex and last year’s date Mark Ronson).

Elizabeth Hurley still ranks as a leading British babe in a sweetheart neckline slip in aqua blue.

Eva Mendes knocks it out of the park in a flowing Calvin Klein sequined gown, sheer to the thigh, with a stunning Cartier cuff and earrings.