The Dolls performed an energetic routine

They were there to raise cash for charity, and the Pussycat Dolls certainly bent over backwards to give it everything they had at last night's Fashion Rocks.

The five Dolls, Jessica Sutta, Ashley Roberts, Nicole Scherzinger, Kimberly Wyatt and Melody Thornton, squeezed into skin tight PVC stockings and body suits for their energetic performance.

And despite their five inch stiletto boots they jumped, kicked and lunged their way through a fast-paced routine.

Bottoms up: Nicole Scherzinger, center and the Pussycat Dolls

Jessica Sutta, Ashley Roberts, Nicole Scherzinger, Kimberly Wyatt and Melody Thornton give it everything they've got

The Los Angeles group were originally a troupe of up to 30 girls which performed burlesque dance routines to Fifties and Sixties pop hits, before eventually hitting the big time at Johnny Depp's infamous club the Viper Room.

Jump: The Dolls performed an energetic routine

That's all folks: The Pussycat Dolls finished off their routine with a hand in the air

They are currently promoting their new album Doll Domination.

But last night they were performing to help raise money for Stand Up To Cancer, a program established by the Entertainment Industry Foundation to raise money for cancer research.

The Fashion Rocks show in New York was supported by a live telefon broadcast on three American TV stations.

Bollywood Beauties: The scantily clad Pussycat Dolls arrive at Fashion Rocks