Purchased this leo for my 6yo, average sized dancer. Following the recommendations of other reviewers, I ordered the 6-8 sizing for my size 5/6 girl. The leotard is too long in the torso, and most likely would've been too short had we ordered a size down. HOWEVER, the bad part is how baggy the leg holes are. The hips/legs are designed for a more generously sized dancer, so they gape open and roll up. Not attractive, nor modest, at all. I'm disappointed in the fit, but the lining of the leotard looks to be quite ample, and it seems to be well constructed. Will update with durability IF we figure out how to adjust it to fit her.
I recently purchased several of these leotards for my students to wear with, and under certain costumes. I followed the sizing chart and every leotard fit perfectly! They look great, are true to size, and my students say they are comfortable too.