I was pleasantly surprised at how soft this sweater is! I usually wear M or L, and I got a size M in the . I'm 5' 9", 160 lbs, 36DD chest. This is a little tight in the arms, even though I only wear it with sleeveless tops (and my arms are relatively skinny). Also, the cute pleating on the back starts a little higher than waist level on me, but that's not a deal breaker. I might buy a L in a darker color to layer over long-sleeved tops in the fall & winter.