Use this Mod to use Peds as Add-Ons
https://www.gta5-mods.com/scripts/addonpeds-asi-pedselector

Included is:
Sephi SFW
Sephi NSFW
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Installation:
- Using OpenIV, put all files into GTAV>mods>update>x64>dlcpacks>addonpeds>dlc.rpf>peds.rpf
- Run AddonPeds (Run as admin)
- Click "New Ped" input the names Sephi, Sephinude
- Set Ped Type to "Female" and Is streamed "False".
- press REBUILD.
- Done!
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Credits: King Nex