Kimora Lee Simmmons has her hands full!

In the Kimora: Life in the Fab Lane premiere (which airs Sunday night on the Style Network), the star, 34, balances being a mom to 10-month old son Kenzo with her other kids, daughters Ming Lee, 9, and Aoki Lee, 7 -- whom she had with hip-hop mogul Russell Simmons before they divorced in 2008.

From trying to convince her girls to change dirty diapers -- when Aoki refuses, Kimora says she's "acting real Hollywood!" -- to struggling with a crying Kenzo at a photo shoot with beau Djimon Hounsou, find out what the Baby Phat designer is up to!