Steps for altering your avatar’s appearance in every Roblox experience, from adding and removing items to changing your skin ...

How to craft 'Roblox' characters.Once you make it to the "Avatar Editor" screen, you'll be able to choose from several options that let you customize your avatar's clothing, accessories, body, and ...

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.