Ke$ha: New Year's Rockin' Eve Performer!

Ke$ha hits the stage to perform on Dick Clark’s New Year’s Rockin’ Eve with Ryan Seacrest on Friday (December 31) in New York City.

The day before, the 23-year-old pop phenom was spotted leaving her hotel en route to rehearsals.

Ryan co-hosted the annual bash, while Jenny McCarthy served as a special correspondent.

Also performing in Times Square: Taio Cruz!

10+ pictures inside of Ke$ha, Taio Cruz, Jenny McCarthy on Dick Clark’s New Year’s Rockin’ Eve…