RIHANNA: THE HITMAKER, 19

Her “Umbrella” was the song of the summer - spending seven weeks at the top of the charts - but the singer says she’s not done yet: “I’m looking at getting into film, and I’m working on my own businesses.” She’s already hawking a line of umbrellas.

RAVEN SYMONE: THE MINI-MOGUL, 22

Dubbed the $400 Million Woman by Ebony for the estimated revenue her That’s So Raven show has brought Disney, Symone just launched Ravensymonepresents.com.

THE CHEETAH GIRLS: THE TRIPLE THREAT: BRYAN, 23, WILLIAMS, 21, BAILON, 24

Sex may sell, but so does the made-for-Disney Channel girl group’s messages of self-acceptance and female empowerment: their first CD sold more than 2 million copies and their tour raked in $26 million.