A Chicago astronomer is suing the maker of American Girl dolls for allegedly stealing her likeness and name to create its astronaut doll. The Wisconsin State Journal is reporting that Lucianne Walkowicz wants American Girl and parent company Mattel to stop selling the Luciana Vega doll. The toy is described as “an aspiring astronaut ready to take the next giant leap to Mars.” Walkowicz spent much of her career at NASA and has lectured extensively on Mars exploration. The lawsuit filed in Madison notes the doll has a purple hair streak and wears holographic shoes just as Walkowicz does.