First of all, this is so much prettier in person. if i were looking online, i would have scrolled right by this beauty. i am usually a medium or small in retailer tops and dresses. in jeans, i am a size 8 or 10 but i always have to get the waist taken in (little waist, big thigh problem). this piece was tricky for me but i ended up with a medium because the legs are so roomy. also, there are little ties on the sides to pull in the waist more if necessary. the scarf can also be tied behind the neck