The Pussycat Dolls are back on the music scene with their second album. Doll Domination is the follow-up to 2005's PCD and features collaborations with top stars like Timbaland and R Kelly. The five members, who've been compared to the Spice Girls, believe their music is the epitome of girl power. Nicole Scherzinger said: "It's always coming from a strong place, being spoken from a strong place, a very confident place." The Pussycat Dolls kick off their world tour in January 2009.