Roblox provides its users with a wide range of options for personalizing their avatar or character. Players can purchase or acquire free items such as clothing, accessories, and other cosmetics.

Only members of the Roblox Builders Club can make shirts and pants but no membership is required to make a T-shirt.

Much like most things on Roblox, you will be making this yourself from scratch, so you'll need to design a t-shirt in an image and then upload it to Roblox.