I ordered a S/M and it fit exactly like I thought it would. It a "medium" as you can see in the pictures and fits like a true medium. I love it it's so cute! The material is artificial feeling, I was worried it would be silk like and shiny but it wasn't too bad. Great too for the price and one of the cuter off the shoulder tops I've found. Shirt wasn't see through and could definitely be worn without a bra.