Hawkgirls' slut outfit is actually a very faithful re-creation of the outfit worn by Despero's priestesses in the show. Hawkgirl appears in that episode but never wears it, although another one of GL's alien romantic interests (Katma Tui) does.
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I think the fact that it's an actual DCAU design makes it stand above most of the other slut outfits. Many of them (Wonder Woman, Supergirl, Artemis etc.) are pretty random with no connection to the character whatsoever, even clashing with the game's visual design somewhat.
not gonna lie, that image is breaking my brain there. is she flat chested and those are decorations? is se wearing a full body skin color catsuit underneath? wtf is going on in there?
it also doesnt help that the shadow of her left arm looks so weird as well. ironically, the therm alien is the best one to describe it.