The comeback kid Britney Spears performed yesterday for Simon Cowell and the UK audience of his hit show X Factor.

The pop star has been on a whirlwind European trip that included a performance in Germany at the Bambi Awards prior to Spears gig in London.  Britney performed her latest song Womanizer and the shows contestants each performed Britney tunes.

Spears will be back in the U.S. in time to celebrate her 27th birthday on December 2nd.   Her new album Circus will be released the same day.  A large party is planned at Tenjune, a New York City hotspot to celebrate both events.

Check out Britney’s X Factor performance below.

[youtube]http://www.youtube.com/watch?v=crbwTbiv5fk[/youtube]

Photo:  Wenn

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Filed under: Britney Spears, Celebrities, Music, Television