It's been quite the week of high-profile splits: Danica Patrick and her hubby, Mayim Bialik and hers, and now Kimora Lee Simmons and her babydaddy. Simmons' rep confirmed to People that Simmons and Djimon Hounsou have called it quits after five-and-a-half years together, a relationship that produced three-year-old Kenzo Lee Hounsou. Simmons herself verified the split on Twitter yesterday, tweeting, "There have been quite a few hurtful rumors circulating. The truth is Djimon + I have been separated for some time. We have remained happy, loving, co-parenting friends + family. We all have much to be thankful for." Take a look at happier days... (More celebrity stories.)