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

2 Users can make their own clothes with Roblox template Credit: AP How to make a Roblox shirt template Users can make their own clothes for their avatar and here we will show you the tricks needed.

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.