Ballet Recital Costumes Is This Common Practice For Ballet Schools?

Is this common practice for ballet schools? - ballet recital costumes

My 3 years trying desperately to learn ballet. Thus, we have studied in different schools. It seems that most of them share these girls in skimpy costumes that make them look like prostitutes for considerations, and almost all rely on make-up. Seriously, I have to admit that girls can see allow a school for girls too?