Tracy Smith: 'Seventh Pussycat Doll'

(CBS)  The Pussycat Dolls are six beautiful ladies who've become a worldwide musical phenomenon.

Since their early days as a burlesque act at Los Angeles' "Viper Room," the dolls seemed destined to become stars.

Their debut album, "PDC," has already sold more than 4 million copies and produced three top-ten hits.

On The Early Show Wednesday, Saturday Early Show co-anchor Tracy Smith asked the group how it is that they seem to not only attract lots of male fans, but female followers, as well.

"It's because, inside every woman is a pussycat doll," responded lead singer Nicole Scherzinger. "Inside every woman, every girl, there's a star. There's a confidence. And I think this music just brings that out in them. The 'Spice Girls had girl power? We have doll domination!"

And they offered to extend it to Smith, showing her how to do some of their signature moves, making Smith, according to Scherzinger, the "seventh Pussycat Doll!"

To watch the segment, click here.