Pussycats Dolls Give First Live Performance in 10 Years, Sing Their Greatest Hits for 'X Factor' (Video)

The Pussycat Dolls are back together and they just gave their first live performance for the first time in 10 years! The girl group reunited on stage for an amazing performance on the finale of The X Factor: Celebrity on Saturday (November 30) in London, England. Nicole Scherzinger, who is a judge on the singing