I have an old Natalie unitard that is my very favorite (from probably 6 years ago), so I had high hopes for this. What a disappointment.
I typically wear a large in dance wear, but I have a short torso. (155 lbs, 5'9", 37 bust, 30 waist, 41 hips, 60 girth). I ordered the large. ENORMOUS. Probably 10 inches of extra length in the torso, like the other reviewer has said. So I exchanged it for a medium. ALSO ENORMOUS. Just as much length in the torso, it seemed, and thus completely unwearable (there was no way to take up the straps enough to make up for it).
Natalie's unitards used to have a somewhat short torso - they fit me perfectly but were too short for a friend. I guess they overcorrected WAY too much, because this unitard is just silly. I can't think of anyone long enough to wear it.
Wish I'd paid more attention to the previous review stating how big this runs. I often require a medium for length in the torso of my other Natalie leotards, even though I'm only 5'2". Smalls or medium in Natalie leos are form-fitting on me. This unitard is at least 10" too long in torso and baggy, bags in the thighs and butt, the legs cover my entirely cover my feet and extend another 10" while still bagging in the ankles. I do have short legs, but am not particularly skinny. It looks a lot like a warm-up romper on. It is incredibly soft and the seams are very comfortable, much more comfortable than the average leotard, or one made specifically by Natalie. I am keeping it because I feel returns aren't worth the time or shipping. It would be comfortable to sleep in, to use as a warm-up, or I may attempt to alter it, although it will take a lot of work. I would recommend ordering down at least 2 sizes, and don't even bother trying the small unless you wear at least a large in other dance clothes.
This product runs large. The torso is extra long - even on dancers who normally wear products designed for long torsos. The inseam length is plenty long for long legged body types. The bodice is high and modest even with the gathering in front. If you are buying this unitard to wear under a costume please keep this higher neckline in mind. If you need this unitard to fit tightly to the body with no bagging, I recommend ordering a size down. Unfortunately this does not come in an extra small size. The fabric is very soft, comfortable and completely opaque.