Why do celebrity actresses and models do that pose where they angle their leg diagonally/45°?

https://lemmy.world/post/44031722

Why do celebrity actresses and models do that pose where they angle their leg diagonally/45°? - Lemmy.World

My prevailing theory is it creates a hypotenuse that makes their legs look longer (and therefore: skinny-er)?

I mean not exactly like that but I find it comfortable to put the weight on one leg when stopped remporarily like for a light and let one leg not be weight bearing and rest for a bit.