>>2104785This is how I would do it. Skin-colored gloves, socks and circle face mark. Hide certain body parts. Put a bra on the character and press 9 repeatedly to make it transparent.
The only problems are that the ears will be the "suit" color and the toes will be covered by the socks, so I would also take a fully nude copy of the character and combine it with the picture of them wearing the "suit".
Some of these code/hair/belt wizards might have a good method to do it 100% in-game.