Irreconcilable differences led her to the decision, she said.

KIMORA LEE SIMMONS, estranged wife of RUSSELL SIMMONS, filed for divorce from the hip hop icon on Tuesday, People reports. Citing irreconcilable differences, Kimora, 32, asked for legal and physical custody of their daughters, MING, 8, and AOKI, 5. She also requested "reasonable child visitation" privileges for Russell, 50, with the addendum that he be accompanied by the kids' nanny and security personnel during visits, according to the mag.

The couple announced their breakup in March 2006, though they admitted to People that they'd already been separated "for some time." Rumors are now swirling that Kimora is pregnant with her actor boyfriend DJIMON HOUNSOU.