Katherine Heigl hosted a star-studded baby shower for Ellen Pompeo on August 29, in the backyard of her LA home. Their Grey's Anatomy co-stars Kate Walsh and Sandra Oh, as well as Eric Dane's wife, Rebecca Gayheart, were among the 25 guests who celebrated Ellen's impending motherhood. Ellen, who is expecting a baby girl with husband Chris Ivery, kept cool during the outdoor event by wearing a white summer dress with her hair in a casual up 'do.