Washington, Dec 1 : Britney Spears celebrated her 27th birthday at Britain''s premier gay club.

The pop star was in London for an appearance on TV talent show X Factor, reports Contactmusic.

She stopped by the G. A. Y. event, where she was presented with a cake, decorated to look like the cover of her new album Circus.

Fans sang Happy Birthday to the singer as she beamed down from a V. I. P. balcony.

The big night was a Britney-themed party at the popular club, housed at London''s Heaven venue. (ANI)