My son is a crazy Doctor Who fan and I wanted to get him something besides candy for Easter. I was a little confused about sizing for this shirt. There was no specification as to whether these shirts were junior sized or adult. Checked out all the reviews for possible clarity on this with no luck. I took a chance assuming that they were adult and bought my 13 yr old son a small. Fits perfect!!!! I was so happy because you never know right? The graphics are great, clear and cool, and the quality of fabric seems to be nice and sturdy like it should last a while. Great buy just know that this is an adult size.