Crystal Clark was a fellow student at Trumaine University who was enlisted by Bud fo pose as the cover girl of the Girls of Trumaine calendar he created for a entrepenural studies class assignment in the Season Ten episode of Married with Children titled "Calendar Girl". Crystal was played by actress Krista Allen.
About Crystal
When Kelly brings home a boy calendar and Bud comes up with an idea: he'll make a Girls of Trumaine calendar. Thus, he enlists the lovely Crystal. Unfortunately, he does not know the personal secret of Crystal, that she was, in fact, a transsexual! (Krista, who plays her, just to mention, is all woman!) When Crystal reveals her true gender on a local TV talk show, the shocked Bud, who even contemplated the possibilty of proposing marriage to Crystal, is crestfallen!