To be honest, most of the new outfits in New Vegas are quite conservative. There aren't many outfits that would qualify that aren't holdovers from Fallout 3 (the aforementioned red "merc adventurer outfit" being one, on top of the raider outfits) or prostitute outfits. The only outfits that really qualify would be the female Great Khan outfits. Daisy dukes with an open vest without a shirt... The other outfits in New Vegas tend to be a bit more dull and conservative (field hand outfit), or classy/stylish (formal wear or Vera's outfit), as opposed to skanky.