Are you a Killer Termite? Are you too broke-ass to buy one of Doug's real shirts?
Worry not. Trevor is a fan and he wants to share that with you.

Install:
Use OpenIV to locate and open

....\Grand Theft Auto V\MODS\x64v.rpf\models\cdimages\streamedpeds_players.rpf\

Replace uppr_diff_000_a_uni.png with the one provided.