Creating a styled dummy for cutscene

I’m trying to have a dummy have clothing for a cutscene, specifically the one shown in the picture, but I’m struggling on putting clothing for it.

I’ve tried having the shirt and hair in the designated spots so when the rig moves, it just falls into place but that wasn’t working well for the hair.

I don’t really recommend using Rthro. People on Roblox have an instinctual hatred toward them, me included - and there’s a reason for that. A lot of Rthro bodies have UVs so cursed that 2D clothing literally can’t line up no matter how hard you try.
Some even ship with broken WrapTargets, so layered clothing just gives up and falls apart.

If you want your cutscene to not look like a fever dream, use a normal R15/R6 body or a custom mesh with sane UVs instead.
Docs if you wanna dig deeper:

https://create.roblox.com/docs/reference/engine/classes/Accessory
https://create.roblox.com/docs/art/accessories