Rebecca Gayheart stepped out in LA yesterday with her daughter Billie and a nanny. The trio was off to visit a friend's house, with baby Billie wearing little pink knit booties for the occasion. Billie and Rebecca have been able to enjoy the great Southern California weather this Winter, hitting the park for playdates  and enjoying walks out in the sun. Rebecca and her husband Eric Dane  have been able to enjoy some adults-only time, however, stepping out for a black tie date night  with their famous friends. He's been busy in recent weeks working on Grey's Anatomy , and he'll apparently stay that way until next year as the series was recently renewed . He's among the many stars of the program who are parents to young children — test your knowledge of the cast's kids by taking Lil's quiz ! The baby boom is transitioning over to the small screen as well, since one of the characters on the show  is pregnant now too.