Give people a shirt,pants and hat as soon as they join a game?

All characters have Shirts and Pants inside them, unless they are using a package like me.

Click for the Character

We can set their textures using -

Shirt Template and Pants Template

So, therefore, this script will work.

local shirtemplate = "id here"
local pantstemplate = "id here"
local hats = {"hat 1 id","hat 2 id","hat 3 id","even a hat 4 id"}

function giveShirtAndPants(p)
	local c = p.Character
	c.Shirt.ShirtTemplate = shirtemplate
	c.Pants.PantsTemplate = shirtemplate
	for _,v in pairs(hats) do
		local hat = game:GetService("InsertService"):LoadAsset(v).Parent = c
	end
end

game.Players.PlayerAdded:connect(function(p)
	repeat wait() until p ~= nil
	repeat wait() until p.Character ~= nil
	giveShirtAndPants(p)
	p.CharacterAdded:connect(function(c)
		repeat wait() until c ~= nil
		giveShirtAndPants(p)
	end)
end)