Thwack! Ka-pow! Boom! Check out these Girls Superhero costumes at Spirit Halloween. Wonder Woman to Supergirl we have them all. Step into that phone booth, put on that cape and watch those criminals flee Metroplis. If you do have an evil side to you we offer all the villiams too. From Daddy's Lil Monster, Harley Quinn to the often misunderstood Catwoman! So whether you are escaping Belle Reve or are chasing the criminals down, you will find all your Girls Superhero costumes here.