Is it possible to make a system that checks a player for VIP shirt, but they don't have to wear it?

I currently have a door that scans the player who touches it for a VIP Shirt. They MUST wear it otherwise it won't allow access. I now want to make a GUI which allows them to click certain buttons if they own the shirt, but they don't have to wear it. How can one achieve this?

As TheeDeathCaster said, you would have to use PlayerOwnsAsset Which I believe can be carried out as follows:

local plr = game.Players.LocalPlayer
local asset = 000000000 -- enter shirt's ID here
local button = script.Parent --change script.Parent to path to GUI button

button.MouseButton1Down:connect(function() 
	
	if game:GetService("MarketplaceService"):PlayerOwnsAsset(plr,asset) then
		--Enter the code here which you want the button to do E.G
		--[[script.Parent.Text = "Player has Shirt!"
		wait(1)
		script.Parent.Text = "Click me!"]]
	else
		-- enter code here again, an example
	
	--[[script.Parent.Text = "Player does not have the Shirt!"
		wait(1)
		script.Parent.Text = "Click me!"]]
	end
end)

Shortened down, it should look something like this:

local plr = game.Players.LocalPlayer
local asset = 000000000
local button = script.Parent

button.MouseButton1Down:connect(function() 
	
	if game:GetService("MarketplaceService"):PlayerOwnsAsset(plr,asset) then
		--code here
	else
		-- enter code here
	
	end
end)

However, In order for this certain script to work, it needs to be in a LocalScript inside the ScreenGui

If this doesn't work just comment and I will edit it. :)