Roblox decently recently made a HumanoidDescription API that makes this very simple.
You can check out the DevHub info on it here (though the DevHub might still be under maintence): HumanoidDescription | Documentation - Roblox Creator Hub
If the DevHub is under maintenance you can get a more general idea of the API here: New API For Equipping Assets on Humanoid Player Avatars
The basic idea is that you can use Players:GetHumanoidDescriptionFromUserId(userId) to get a description of the assets a “Top Player” is wearing, and then Humanoid:ApplyDescription(humanoidDescription) to apply it.
EDIT: Dang somone else beat me to it, haha. I was in here when you first posted but work got busy. Don’t be afraid to ‘@’ me if you have questions on using it, I may not have all the answers but I was really hype when this API came out and familiarized myself with it.