My custom commands script isn't working?

Everything is working, except for when I use smallhead. It doesn't remove the hats, which is annoying. Help?

game.Players.PlayerAdded:connect(function(player)
    player.Chatted:connect(function(msg)
        if msg == "bighead" then
            player.Character.Head.Mesh.Scale = Vector3.new(3, 3, 3)
        elseif msg == "smallhead" then
            player.Character.Head.Mesh.Scale = Vector3.new(0.7, 0.7, 0.7)
        elseif msg == "normalhead" then
            player.Character.Head.Mesh.Scale = Vector3.new(1.25, 1.25, 1.25)
        elseif msg == "respawn" then
            if player.Character.Humanoid.Health > 0 then
                player:LoadCharacter()
            end
        elseif msg == "sparkles" then
            if not player.Character.Torso:FindFirstChild("Sparkles") then
                local sparkles = Instance.new("Sparkles", player.Character.Torso)
            end
        elseif msg == "fire" then
            if not player.Character.Torso:FindFirstChild("Fire") then
                local fire = Instance.new("Fire", player.Character.Torso)
            end
        elseif msg == "shutdown" then
            if player.Name == "Relatch" then
                for i, v in pairs(game.Players:GetPlayers()) do
                    v:Kick()
                end
            end
        end
    end)
end)