Three Supergirls Helen Slater the original movie Supergirl, also Plays "Lara" supermans mother and Supergirl(Laura's) aunt! Plus she's also Supergirl(Melissa's) earth mother "Eliza!" Laura Vandervoort plays Supergirl on Smallville is Lara's(Helen's) Niece and Supergirl's (Melissa's) enemy "Indigo". Melissa Benoist is the TV Supergirl, foster daughter of "Eliza Danvers"(Helen 'supergirl' Slater) and arch enemy of "indigo" played by Laura(Smallville "Supergirl/Kara/Linda Danvers.") GOT THAT?
