Supergirl, meet Supergirl. That is sort of what will happen in episode six of the upcoming season of Smallville when Helen Slater, who played the woman of steel in the 1984 movie Supergirl, will guest star on The CW hit series confirms Sci Fi Wire.

It was announced a few weeks ago that Smallville was adding the character of Supergirl to its show and that Laura Vandervoort was cast in the role. So what role will Slater play? Spoilers after the jump!