Creating stuff for Sims 3 is a very frustrating thing for me, as I always discover new ways to fail, apparently. However, I made a little thing and I like it so... yeah. Anyway, it's a top I hacked off a Showtime outfit. There is just one preset; three channels, plus alpha for the holes; all three LODs; game textures. It works fine in my game so far. I apologize in advance in case you discover anything wrong with it in yours. XD
DOWNLOAD.