Proud parents-to-be Mariah Carey and Nick Cannon recently held their baby shower on march 6, at the rooftop Conservatory Grill at the Montage hotel in Beverly Hills. Guests included celeb pals Randy Jackson, Piers Morgan, Penny Marshall, Lorraine Bracco, andBrett Ratner. They nibbled on a selection of gourmet pizzas and appetizers and enjoyed Mariah's
