These pants are from the original GTA5, I have removed the tights and now you can see the skin of the character and the tattoos.
It can be replaced at this address:
update\x64\dlcpacks\mpstunt\dlc.rpf\x64\models\cdimages\mpstunt_female.rpf\mp_f_freemode_01_mp_f_stunt_01
In any of the LOWR that are available at that address, or if you already know programming, add it without substituting.
Credits:
Noviacadaver