Beyonce, Kim Kardashian and Other Savvy Celeb Businesswomen

Beyonce attends Beyonce's First Fragrance Launch After Party for "Beyonce Heat" - Catch the Fever on February 2, 2010 in New York City. Credit: Kevin Mazur/Getty

Who run the world? Girls!

New mom Beyonce -- who croons about girl power in her female empowerment anthem "Run the World" -- is just one of Hollywood's elite who is successfully balancing a busy career and family while building a business empire.

"I'm never satisfied," Blue Ivy's mama -- who returned to the stage over Memorial Day Weekend for a three-night concert event in Atlantic City, N.J. -- tells Forbes. "I've never met anyone that works harder than me in my industry."

Here, Us Weekly highlights Beyonce, Kim Kardashian, Gwen Stefani and a handful of Hollywood's savviest celeb businesswomen.