Amazing Girl's costume is so skimpy that every male villain, hero, and civillian all stop to stare at her.
Amazing Girl goes to a strip club in order to capture a villian who frequents it. She forgets to change her outfit. Because of her costume, she is mistakened by most of the men as a stripper who works there, much to her consternation.
Invoked: "You can't be a superheroine unless you're willing to show yourself off!"
Defied: "No, I'm not putting on stripper clothes. I'm going fighting, not whoring!"
Discussed: "Great; it's the planet of the super-strippers..".
Conversed: "Wouldn't you think she'd get cold fighting evil dressed like that?" "Nah, fighting crime means a lot of physical activity. Works up a pretty good sweat". "Really? I hadn't thought about that".
Amazing Girl wears such revealing clothing because it is required by her powers, however due to her body issues, it is a constant source of angst.
Amazing Girl must wear the costume because of a sexist code of regulations in the superhero organization with which she works. Because of this rule, superheroines are more vulnerable to harm than superheros, because they have more skin showing. Eventually, all of the superheroines get tired of their higher mortality rates and sexist rules, and retire in disgust.
Amazing Girl uses her secret identity to indulge in some exhibitionism, specifically choosing her costume to play towards her secret kink. However, it quickly destroys her reputation as a super-heroine, which she has to later work very hard to recover.
Amazing Girl's clothing provides so little protection to the point that she constantly becomes seriously injured, and is covered in scars and injuries, tarnishing her external beauty, and perhaps even putting her overall health and/or fighting ability at risk.
Amazing Girl clothes are very demure but keep getting destroyed during battle and she is incapable/ it would be a detriment to get more bulky armor. This get started rumors that she is an exhibitionist and had to decide between her efficient in battle and her good name.
Amazing Girl wear so little clothes because is the last of her armor after countless battles and the world she lives doesn't posses the material to reforge a new one and the rest of the metals are simple useless. This force her to use more evasive maneuver and keep recieving wounds and scars during her mission.
Between dead parents, a traumatizing childhood, an atomized homeworld, or constant torment from an unstable biology, body issues are pretty low on the angst scale. After being formally inducted to a superhero team, and spending time with people with much more dire personal problems, Amazing Girl gradually works through her own image problems. She never does get around to changing her costume, though.
Amazing Girl is a legacy character who takes up the costume of her previous incarnation, despite it being insultingly sexist in comparison to the rest of the more modern setting. As she grows as a heroine, she replaces the costume with her own sensible version, only to have to switch back to the original during a disaster. She discovers the costume is a huge morale booster for her teammates and the civilian population during the dark times of the event, pathetically short skirt and all, and keeps a slightly modified version afterwards.
Amazing Girl wear only protection in his his arms and legs to fortify her combat prowess, schewing and accepting the danger such open weakness get since no defense is perfect. Instead she used agility, enhanced reaction and her arm and leg protectors to avoid or stop the damage and wear the scar of battles as trophies of war.
Amazing Girl realize that wearing armor to where they are going is complete suicidal (Desert,Jungle, In a ship), there is no smith or Gadgeteer Genius close, or it would mark her instantly as a soldier. Instead she decide to wear little clothes or "impractical outfit" to fufill her mission better and keep her hide (if not her dignity) intact.
Amazing girl has passed from a Training from Hell or from a Proud Warrior Race which make her body harder to damage, is adaptable to harsh temperature or use and outift that its defined to blend/use in that specifically environment which just happens to look striperrific to outsiders. Amazing girl scoff at the critics and in the end had to save them from their own stupidity-ego.
Played for Laughs: The superhero organization where Amazing Girl works forces its female members to dress in "skimpy" clothing. However, they have a different definition of "skimpy": what's revealing for them is actually very conservative for most people!
Played for Drama: Amazing Girl has body issues and fears that she can't fit into her sexy costume when she becomes a superheroine. Her superhero organization won't approve a second outfit for her either. In disgust, she performs a Face-Heel Turn, mainly because Sensible Heroes, Skimpy Villains is inverted in the series.