How to Make T-Shirts in ROBLOX T-Shirts are the easiest clothing to make in ROBLOX. Create an image that’s ideally 512x512 pixels and then upload it to ROBLOX via the Asset Manager in ROBLOX Studio.

Roblox has had in-game development tools via its Studio feature for a while, offering users the chance to create entire games that can then be published for other players and monetized.