This small states it equates to a size 6 although the bust measurement states 24 to 25 inches and size 6 usually says 26" chest.  This is actually more equivalent to a size 5 Jumping Beans Kohl's brand measuring 24 inches just under the sleeve but also tapers in a little below that point.  It is 18" long measuring from the back neck point at center to the longest point of the curved hem.  I ordered the small because so many reviews mentioned that the wide neck slid off shoulders but it is too small in the chest area for us.  The material is thin and if this shrunk even a little it would be unusable.