Oscars 2009 aftershow snaps

After all that awards back-slapping, it was time for the talented and the beautiful to let their hair down, quoff (more) champagne and party the night away. 

The paps got a real treat at the Vanity Fair party, when latest A-lister couple on the block - Jen and her musician beau John Mayer - made a rare public appearance together and even smiled for the cameras.

The bash, hosted by the glossy mag, attracted many a big name star. Check out our slideshow to see who joined Jen 'n' John.

The ever-understated Kill Bill actress looked stunning in a simple cream sparkly gown.

Fresh from shooting Sherlock Holmes in London, RDJ enjoyed hanging out with his lady in red, film producer wife Susan Downey.

The Body managed to defy the laws of gravity in her low cut white satin emsemble. 

The demure Superman actress shimmered in sequins.

The sleek-looking Rolling Stones frontman - joined his model-turned-designer missus - proved that he can still scrub up well despite all those years of rock 'n' roll excess.

The King Kong actress, and Nicole Kidman's bezzie mate, carried off the mermaid look in style. 

However, our bet is that she didn't throw shapes on the dance floor to the Grease medley in that skirt.