@Cupid Not necessarily, but it probably depends on the mesh. I've turned some tight-fitting full-body outfits into pants so I could make sims wear them under a jacket, and nothing ever overlapped. And it's the same with those undershirt gloves. This is their texture map:
https://abload.de/img/gloves1u2j5k.jpg
And this is what the accessory looks like in the game, paired with normal upper body garments:
https://abload.de/img/gloves2vpj0k.jpg
The textures are technically in the same place on the map, but not overlapping in the game. And as I said before, even I managed to do something like that, even though I'm a total noob when it comes to modding. So I'm sure if they really wanted, they could do it...
