I am 5"7" and weigh 123 lbs. i tried on both these dresses in medium, and they both fit. they are not too thin, not too high slit, not scratchy. the problem is i am middle aged with a thick waist. the waist looked lumpy with the close fit knit. if you are younger, slim and tall, you will love it. i sent it back with regrets. hope this helps.