Lily Allen celebrates No.1 at G-A-Y

Lily Allen has celebrated reaching number one in the UK singles chart with a live set at G-A-Y.

The singer came on stage wearing a Pink Panther costume but stripped off to a one-piece blue playsuit and stockings after the first song.

Simon Roberts, a 27-year-old fan at the show, told The Sun: "She's got a great figure with curves in all the right places. She looked absolutely fantastic."

At one point on stage, Allen lifted up the bottom of her outfit and flashed her knickers at photographers.

For her encore, the Alright, Still singer changed into a shiny air hostess outfit and performed a cover of Britney Spears's hit 'Womanizer'.

Allen's new single 'The Fear' went straight into the charts at number one last weekend, knocking Lady GaGa's 'Just Dance' to number two.

> Click here for a studio version of Lily Allen's Britney cover