Jenna Dewan-Tatum Will Be Playing A Part Of A Pretty Iconic Comic Book Family In Supergirl This Fall!

This is some super casting news! Supergirl already looked like it was going to be must-watch-TV this Fall, but the latest news out of the CBS comic book series is simply out of this world. That's because Jenna Dewan-Tatum just joined the cast as the iconic Lois Lane's little sister Lucy Lane! [ Video: Get Your First Look