This is so true. The “prettiest” one in my primary class, wasn’t truly pretty or beautiful. I saw this even aged 10! Instead, she was very loved (by her adoptive parents) and a great confidence in herself came from this. Plus, she always had great hair and clothes; ie the superficial stuff.
I was moderately popular, even though (and I’d only say this on an anon site!) I had a really beautiful face/body (i modelled). But I mostly had crap unfashionable clothes, and was constantly put down by my mum (who was a jealous and angry woman), and I really lacked the confidence I might have had, had my mum been normal/nice.
The popular “babe” mum at my kids primary is likewise honestly not “bone structure/facial structure” beautiful. In fact, objectively, she’s actually got a rather ugly and unbalanced face. BUT again, superficially everything is wonderful. Perfect hair, great clothes, thin, white teeth, and ultra confident! She’s also very sociably intelligent — says the right things, is a good host, etc.
so, what makes a child popular? Feeling good about themselves must play a big part. It’s probably true for adults too! Superficial stuff, like nice clothes and hair helps - perhaps because it reflects the fact that you feel good (or tells the world you feel good). But ultimately, a confident, happy person, with self belief, tends to be attractive and thus popular. My children have loads of pals, they are all self confident, but thoughtful, playful, kind, and yes — NO DRAMA!
To add one more thing to the mix, at my secondary there was a little clique of “popular” girls, with its own queen bee. She was certainly beautiful with great clothes, and physically mature, sharp tongue, cool. Everyone was in her awe. She’d have been voted class most popular at the start. But she was also a bit of a bully/a frenemy type, and by year 11, everyone had got wise to her, and she was pretty much friendless.