Arrrrgh! I had to uninstall and reinstall my game, and I lost all the mods in the process. Now I can't find some that I need. One is the mod that allows you to create a "nude" outfit in addition to the others. It puts an extra tab at the lower left of the Sim creator that says "nude" under the others that say "everyday", "formal", "sleepwear", "athletic" and "swimwear". It was easy to install, but now I just can't find it again. I'm sorry, and thank you.

Do you mean XCAS? http://www.modthesims.info/download.php?t=434270

Never mind. I found it.