Fagmalion

Anyone who takes an unfortunate looking gay man--who cannot dress well, and does not groom himself effectively--and transforms him into a hot, kempt, fashionable gay man; usually a more experienced new friend who is trying to create a suitable boyfriend.

"You'd be much hotter with an updated wardrobe and I'm just the Fagmalion to help you."
"Look at Fagmalion over there waxing Johnathon's unibrow. He's already dated every beddable guy in town so now he's making them from scratch."