Entertainment Tonight. ET confirms that one "Grey's Anatomy" star has welcomed her first child! Ellen Pompeo -- who plays Dr. Meredith Grey on the ABC show -- gave birth to a baby girl on Sept. 15 in Los Angeles. Her and husband Chris Ivery named their new bundle of joy Stella Luna Pompeo Ivery. Pompeo's costar Katherine Heigl recently adopted a baby girl from Korea. The new mothers' hit show debuts the season premiere Sept. 24. Related stories on ETonline.com:Katherine Heigl Hosts 'Grey's Anatomy' Costar Ellen Pompeo's Baby Shower'Grey's Anatomy': Sex & Death in the Season Premiere