Let's get acquainted with the nicest Mean Girl, Amanda Seyfried. (Though you can acquaint yourself once again with Lindsay and Rachel, if you so desire. And you so do.) She got her start in film as Karen Smith, the not-so-mean member of the Plastics, with breasts that had the power to tell when it was already raining. Fans of awesome but ultimately canceled TV shows might also remember her as Lily Kane from Veronica Mars. However you slice it, this 29-year-old actress is just a breath of fresh air and incredibly sexy. You need no more proof than to watch her in 'Lovelace'. You'll thank us.