You will need the MESH_ju-beos_slimbb-overalls060311 mesh from
here for these to show up in your game.
Here are 8 outfits consisting of jeans with a rolled-up sleeve top for the slimmer bodybuilder.
They are organised into 2 sets with 4 outfits in each set.
Set 1.
Set 2.
Credits:
Mesh - Marvine and Beosboxboy