Jean Grey / Phoenix

Evolutions: “X-Men: 1st Series”; “X-Men: 2nd Series”; “X-Men: 1st Series #101”; “X-Men: 1st Series #137”; X2: X-Men United; X-Men: The Last Stand

Cyclops' wifey, another original X-Men member, would later drop her girl-next-door look in the 1st Series for a sexier modern look in the 2nd. We see why she had both Cyclops and Wolverine caught up. In between of course, was her Phoenix phase where her outfits are representative of the lack of Jean’s usual inhibitions.