This was a really cute vest, and it had all the qualities I had been looking for - warmth, softness, hooded, rugged-yet-cute styling, and the price was just right. However, it wasn't just very, very big (the small fits me like a large), it was also very boxy - large in the chest-area, and narrower in the hips. So, if you are a busty woman with very slim hips, this vest is for you. I had to return it. Based on the sizing, I suspect an XS would be too small across the hips (for reference, I'm 5'6" with measurements 28-26-36 - I wish more people who reviewed clothes would post that, it makes a big difference..)