Britney Spears Shows Off Her X-Factor

Britney Spears is all smiles as she greets a crowd of adoring fans after taking the stage on ITV’s X-Factor in London on Saturday.

For her first live UK television performance in over four years, the back-in-the-groove pop princess performed her hit single “Womanizer,” while the five remaining X-Factor competitors gave their own renditions of Britney classics.

Britney, who turns 27 on Tuesday, made her X-Factor appearance as part of a whirlwind publicity tour around Europe for her sixth studio album, Circus. Watch the video below!

15+ pictures inside of Britney Spears showing off her X-Factor…