You will need the bell bottom pants mesh for the slimmer bodybuilder from
here for these to show up in your game.
Here are 16 assorted outfits for the slimmer bodybuilder.
They are organised into 4 sets with 4 outfits in each set.
Set 1 - casual
Set 2 - casual/formal
Set 3 - casual/formal
Set 4 - casual
Credits:
Mesh - Marvine