These remind us a little of roller derby outfits. Well, the tops, at least. And, of course, it isn't hard to imagine Ms. Harleen as a roller derby girl, thanks to the New 52.
Complete with player numbers on the back (Bruce Wayne, 68 and Harley Quinn, 00, shaped like diamonds), these DC Varsity Sleep Sets are perfect after a punishing derby practice, when you're discovering all your new bruises. They're also great for a long study session or just streaming Netflix on the couch.