Seeing that the size chart was not very helpful and my gut instinct told me to order a size Small, I relied on reviews to decide and went with a size Medium instead (being as most people said this jacket runs small). Once received, I found the sizing very true and will be exchanging back the Medium for a Small. If it helps others out: I am female, 5' 6" tall, medium build chest 34 x waist 28 x hips 38. IT'S A GREAT PIECE, I'd just like it in my size to fit properly. Contrary to other reviews, I don't feel these run small at all. Happy shopping purple people! O(+>