Delia's jeans question?

Well, a size 14 from abercrombie kids is a little too big on me, but a 12 is too small. When I buy jeans from Delia's, I buy either a 0-00. From pacsun, they are a 0. Jeans from American Eagle are size 00... I don't know if this helps you at all.... they might be a little too big though. Maybe you could exchange?