Is there a way to shorten the length of this script, or make it more efficient?

I'm trying to make my own inventory, so far so good. But to me, this script that updates the inventory seems very long, and inefficient. Is there any way I can improve it?

local plr = game.Players.LocalPlayer
local buttons = script.Parent.IFrame:GetChildren()
local items = plr.Backpack:GetChildren()
local iframe = script.Parent.IFrame

function updateinven()
	for i = 1,#items do
		if #items == 1 then
			iframe.Button1.Visible = true
			iframe.Button1.ItemName.Value = items[1].Name
			iframe.Button1.Text = items[1].Name
		elseif #items == 2 then
			iframe.Button1.Visible = true
			iframe.Button1.ItemName.Value = items[1].Name
			iframe.Button1.Text = items[1].Name
			iframe.Button2.Visible = true
			iframe.Button2.ItemName.Value = items[2].Name
			iframe.Button2.Text = items[2].Name
		elseif #items == 3 then
			iframe.Button1.Visible = true
			iframe.Button1.ItemName.Value = items[1].Name
			iframe.Button1.Text = items[1].Name
			iframe.Button2.Visible = true
			iframe.Button2.ItemName.Value = items[2].Name
			iframe.Button2.Text = items[2].Name
			iframe.Button3.Visible = true
			iframe.Button3.ItemName.Value = items[3].Name
			iframe.Button3.Text = items[3].Name
		elseif #items == 4 then
			iframe.Button1.Visible = true
			iframe.Button1.ItemName.Value = items[1].Name
			iframe.Button1.Text = items[1].Name
			iframe.Button2.Visible = true
			iframe.Button2.ItemName.Value = items[2].Name
			iframe.Button2.Text = items[2].Name
			iframe.Button3.Visible = true
			iframe.Button3.ItemName.Value = items[3].Name
			iframe.Button3.Text = items[3].Name
			iframe.Button4.Visible = true
			iframe.Button4.ItemName.Value = items[4].Name
			iframe.Button4.Text = items[4].Name
		end
	end
end

plr.Backpack.ChildAdded:connect(updateinven)
plr.Character.ChildAdded:connect(updateinven)