I ordered the Adult Medium in Black and it fits perfectly. It's very comfortable and the sleeves are roomy which slims the arms, which I appreciate. But the shirt is not baggy. Rather, it balances between loose and tight, giving it an "I stole this from my boyfriend because it looks better on me" look, haha. The seller also shipped it in a flash. It arrived before I even knew it was shipped. I recommend this shirt and this seller.