Sporting long black hair extension, Lily was daring in a leotard covered with a sheer long overlay.
The singer picked up the Woman of the Year Award, which was presented to her by her party pal Kate Moss, who showed off her figure in a printed micro-minidress.
Kelly Brook, however, rather stole the show in a body-boosting pink PVC dress, which enhanced her perfect hourglass figure.
A host of female celebrities made the most of the balmy Indian summer evening, with Elizabeth Hurley sporting a pretty baby-blue bandeau embellished dress.
Welsh opera singer Katherine Jenkins sported another Victoria Beckham Collection dress, this time choosing the very same £1,750 purple number that Posh wore for her first appearance as a guest judge on American Idol.
Fresh from a trip to the Venice Film Festival, A-list actress Eva Mendes added some Hollywood glamour to the bash and looked stunning in a floor-sweeping maroon gown.
Eva was invited to the bash to present the coveted Actor of the Year award to Welsh film star Michael Sheen, who played David Frost in the Oscar-nominated Frost/Nixon earlier this year.
Other stars who wowed on the red carpet included Natalie Imbruglia, Jamie and Louise Redknapp, Natalie Imbruglia, Gemma Arterton and Freida Pinto.
By Ruth Doherty