Popular U.S. TV fitness guru Jillian Michaels has become a mum of two after adopting her two-year-old daughter Lukensia from Haiti in the same week her partner Heidi Rhoades gave birth to the couple's baby son Phoenix. In a tweet to fans, Michaels coos, "I'm really happy to share that my daughter is finally home (and) my son was born on 5/3."