Britney Spears is hosting a cycling class for charity.
The pop star will get on her stationary bike next month (Oct16) to raise money for the Nevada Childhood Cancer Foundation.
Announcing news of the inaugural Britney Spears Piece of Me Charity Ride at Xcycle in Las Vegas, where she is currently performing a residency, the Toxic star is offering 25 fans the chance to join her for a 45-minute indoor cycling workout.
But the saddle space doesn't come cheap - those hoping to sweat it out with Spears will have to pay $10,000 (GBP7,700) to $50,000 (GBP38,500) for the pleasure.
Proceeds will benefit NCCF's One Year One Home Capital Campaign.
Britney is also picking out the music for the cycling class.
One lucky fan, who makes a $10 (GBP7.70) donation to the charity, will get the chance to cycle for free and then catch Britney onstage in her Piece of Me show.
The Britney Spears Piece of Me Charity Ride will take place on 27 October (16).