Mostly athletic and sporty-type clothing. I once got three jockey outfits in one day, and was like, "C'mnon guys, I'm not THAT short!" Never mind all teh instant-muscle shirts. Ugh.
Though there was one day when I got three lacy tanks, so that was a nice change of pace, to actually get something cute.
I keep getting sport tanks and ugly glasses. I mean, it's the thought that counts but I definitely run to Nook's and sell them really fast. Sorry villagers