DC Comics Supergirl Costume Look up in the sky. It's a bird. It's a plane. This costsume includes a classic blue leotard with a big imprint of the infamous 'S' on the front. A flowy red skirt goes on top of the leotard and matches the big, beautiful cape. Every Supergirl has to have a utility belt like the one that comes included in a glossy yellow and a pair of red boot covers to protect your new shoes. Item cannot be shipped to P.O. Boxes