My son needs a shirt for art projects at school. On his school list they just requested a large t-shirt. I would like one that is personalized for him thats a bit more fun then just a regular plain t-shirt. I don't want to go with a smock because I don't want it to be TOO different from what the rest of the class has. I am guessing a size M or L adult would work? His name is Matt and he is into superheros but even an art themed shirt would be fun! Just a plain Haines type shirt is fine and I would just like to see how people can "fun" it up a bit! I would like to have it by the first day of school which is August 25th. Thanks!