If you want to see your sim naked simply do this code:

1. Hold ctrl shift and c and a box will appear in the corner.
2. Type in move_objects on
3. Have your sim go in the shower.
4. Go into buy mode and take the shower off your sim.
5. Now your sim will be standing there naked.
6. They won't even have censor signs so all you need to do is look and see.