Size chart help for woman who dances?

Im a tall woman who wears between large and xl. When I buy a leotard I fit into a size large quite well around wise, but because I'm taller than most girls my size. It pulls along the elastics around the leg holes and stretches on my back to my shoulders so it's not sitting form fitting. 

Is there a way to look up a size longer for a leotard or do I just go up a size to a xl even though I don't need it bigger around my waist?