I danced for almost 12 years, and there was this dance school we would compete with at estedfords who were notorious for this sort of thing, but usually the older girls....13 + (not quite as bad as this), but the judges and other schools generally shunned them, they had a bad reputation. Tacky, cheap and nasty.
I distinctly recall only one estedford whereby the music stopped playing and the judges instructed an entire troop (girls I think in their early teens) to get off stage and come back when they had clothing on.
The costumes were made in a way that made them look naked, and the judge was quite pissed off. Was one of those crappy fly by nighter schools noone had ever heard of before, which is usually the way because good schools with a reputation to maintain don't compromise their good name and or promote the sexualisation of their dancers.
And to think, their stupid parents went along with it!