How do I access game.Players.LocalPlayer in a standard script?

I need to access the player that clicks a block block. I also need to access the player who's mouse hovers over a block. My code only works in studio.

workspace.ChangeOutfit.ClickDetector.MouseClick:connect(function(changeOutfit)
	local pz=game.Players.LocalPlayer.Character:GetChildren() 
	for i=1,#pz do 
	if pz[i].className=="Shirt" then 
	pz[i]:Destroy() 
	end 
	end
	local shirt = Instance.new("Shirt")
	shirt.Parent = game.Players.LocalPlayer.Character
	shirt.Name = "NewOutfit"
	shirt.ShirtTemplate = "http://www.roblox.com/asset/?id=332017894"
end)

This works in studio but not on a game server.

script.Parent.Parent.ClickDetector.MouseHoverEnter:connect(function(ShowClothingGui)
	Gui = script.Parent.Clothing:Clone()
		Gui.Parent = game.Players.LocalPlayer.PlayerGui
end)

script.Parent.Parent.ClickDetector.MouseHoverLeave:connect(function(HideClothingGui)
	Gui:Destroy()
end)

The same with this code.

Thanks for your help.

You can't access the Client from the server, However, but you can get the player that clicked the ClickDetector because it takes a parameter for the player.