So, when i first found this dress it was already on sale and sold out in petites. for reference i am 5'2" and currently weighing in at about 108, and my bust is a 32d. the store near my work has a petite shop (thank goodness) so i headed there after my day. they didn't have it in my size but they did have the regular sizing in a 0, which i promptly purchased.

the crossed part sits a little higher than my natural waist, but i think for someone with a slightly smaller chest it would hit spot on.