Actress Alyson Hannigan is the latest celebrity mom to be spotted at the new Rosie Pope Maternity store on Montana Avenue, which opened not long ago.  After serving as a maternity concierge to the rich and famous, Rosie began creating her own line of stylish maternity wear for every trimester. Following the success of her NYC store, she opened a store in LA which has been frequented by Molly Sims, Jessica Simpson and Sarah Drew.