Britney Spears Gives Lance Bass Lap Dance To Cap US Leg Of Circus Tour

Britney Spears concluded the American leg of her wildly-successful Circus tour at Mandalay Bay in Las Vegas, Nevada on Sunday by giving former 'N Sync heartthrob Lance Bass a tawdry lap dance on stage.

During her rendition of Breathe on Me, Britney called the 30-year-old Bass out of the audience and gave the fresh-faced DWTS alum a sexy bump-n-grind.

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Bass was among a slew of celebrities that caught the Womanizer singer in Sin City for the shows; also spotted in the audience throughout the weekend were Barry Manilow, Miley Cyrus and Mel B.

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Britney's world tour now heads to Australia.

Check out the performance below from September 26th, where she performs Breathe on Me and dances seductively to an audience member.