Instructions:

Step 1: Start OpenIV (Search it on the internet if you don't have it installed yet.)
Step 2: Follow this path: x64v.rpf\models\cdimages\streamedpeds_players.rpf\player_one.
Step 3: Enable edit mode.
Step 4: Replace uppr_diff_004_o_uni.ytd in OpenIV with the one in the A Gift For You folder.

(It's a new texture for one of Franklins T-Shirts!!!)