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Sorry, Djimon Hounsou! Kimora Lee Simmons wants her eight-month-old son Kenzo all to herself!

"I'm trying to turn him into a momma's boy," Simmons, 34, tells

Still, the Baby Phat designer thinks Kenzo -- who she says "is so big" now -- is taking after his dad, Hounsou. (She and Hounsou met in 2007, had a commitment ceremony in 2008 and welcomed Kenzo this past May.)

"He's like his dad, I think," she told Us at the TCA Comcast party in Pasadena, Calif., on Friday. "His dad's more steely and quiet. He doesn't put up a big fuss."

The Life in the Fab Lane star has also noticed that her baby boy is already showing signs that he's different from her two daughters, Ming Lee, 9, and Aoki Lee, 7 -- whom she had with hip-hop mogul Russell Simmons before they divorced in 2008.

"He's not that old yet for me to know for sure, but I can tell you from the older ones, girls are made of sugar and spice and everything nice," she tells Us. "Girls are more emotional, but guys are raised to be less emotional."

She adds: "Girls, whatever you're doing, they want it -- the makeup brush, the doll, the this, the that. He's just kind of cool. He wants his stackable cups or his rubber trucks. He's very manly!"