Plus, being a size 0 has nothing to do with height (it often has to do with an eating disorder though)
Oh man, of course it does (and man seriously it doesn't mean an eating disorder)
I dated a girl that was just under 5 feet tall that you could've clicked and dragged her up into a 6 foot tall girl in Microsoft Paint and she'd look normal still... she had really great proportional leg length to her height. She weighed just over 100 pounds. She was a C cup almost D, but a C cup on a 5 footer is not the same size as a C cup on a 5'9" woman. It's purely proportional. So she could go into 5-7-9 and wear anything. She could buy kids athleticwear. She was a size zero because she was a living barbie doll, and yet, she wasn't "skinny".
Trust me, a lot of midrangers are jealous of that. You don't wear a size zero when you're 5'9" (ignoring the size labeling discrepancies) because you're fat, it's because you're simply taller with larger measurements. You can still look appealing and very beautiful with a tiny waist, but if you're hung up on the numbers, you're gonna have a bad time. I just got tired the few times I tried dating someone in the middle and most of them were just complaining like I wrote earlier. It got old fast... I'm too lowkey for that aggro.