Custom clothing in games

Hi, so I've been playing around with the core editor for a bit now and I'm trying to make it so people in my game start with a set outfit or are able to buy one.

I am talking about pure clothing and not a costume made out of materials, basically the clothes the NPC's and animated meshes wear.

Is this possible? If so, any tips? I've been looking at youtube, visiting other games but I haven't found a single game that has this.