But while Lady Gaga chose to top last year's 'I'm a little teapot' outfit by going as a decorative toilet paper cover, Lily Allen decided to dress-up as the more sophisticated 'Kym Marsh in a bin bag'.

Meanwhile, other eager beavers include Pixie Lott, Leona Lewis, JLS, Kylie, Geri, Alexandra Burke and Mr HM. We suspect Cheryl will be taking the back entrance, a bit like Ashley would do too if he was allowed to go...

More to be added to this gallery soon - i.e, when it actually starts. EDIT: Yep, they're all up here now. Once you're done with this lot:

CLICK HERE FOR THE FULL LIST OF WINNERS