Exaggerated: Whenever Maybelle forgets to clean her room, refuses to share cookies with her little brother, shoves someone and doesn't apologise - ominous music is heard, and Maybelle's white dress suddently turns into a red and black Stripperiffic outfit, and her golden hair become dark purple with neon green highlights...
Downplayed: Maybelle joins The Empire after leaving La Résistance. She keeps most of her old outfit, but a couple pieces are switched out to create a more ominous effect.
Justified: Maybelle's new duds are the uniform or dress code of her new faction.
Maybelle gets her clothes ripped up into a stripperiffic black outfit. She then tries to steal some new clothes to wear, but everyone thinks she's turned evil.
Every time Maybelle thinks about doing something particularly good or evil, she tears off her clothes to reveal either a good or evil set of clothes under it. This continues until either people start tripping over her discarded clothing or she accidentally runs out of layers.
Zig Zagged: Sometimes, Heel-Face Turns cause a costume switch, sometimes, they don't.
Averted: Maybelle's style has always been and still is alignment-neutral.
Enforced: "We need to make it clear that Maybelle's one of the bad guys now — Makeover time! And remember, don't skimp on the Fanservice!"
Lampshaded: "Hey Maybelle. Long time no see. Are those new clothes?" "They came with the evil."
Invoked: Maybelle wants the world to know of her new ideologies and picks out a new outfit to announce it to the world.
"I like the clothes I have, and I'm not changing them now just because I'm evil."
Maybelle keeps the old outfit in order to make her former allies hesitant to attack her.
Discussed: "Has she started wearing a cleavage-exposing, black leather outfit yet? No? Then she's probably still on our side."
Conversed: "What is it about evil that makes all these characters want to suddenly start wearing leather?"
Deconstructed: People eventually figure this out, leading to a bizarrely literal "fashion police" and the gradual erosion of freedom of expression.
Reconstructed: In fact, things go so far that the uniform of the Fashion Police becomes the only Evil Costume to which Faces Turned Heels will switch.
Played For Laughs:
Maybelle, already shown to be quite shallow and obsessed with her appearance, switches sides because Evil Is Sexy and she's fallen in love with Emperor Evulz' fashion sense.