The size is wide. My 4'11 daughter wears a size 12-14 so I ordered her XL 14-16. It fits with very little wiggle room. But she loves it so I hope it doesn't get chubby or bigger or it won't fit. One star off because the delivery was ridiculous. Haven't received a package after 4 today, didn't get here until 630 and I had to hear my suit was still there and my mail was coming and no suit was driving me crazy. if all my other orders are delivered at the same time as my mail