The performers (amateurs rather than professional ballet dancers) didn't see it as "humiliating":
https://www.lingomagazine.co.uk/arti...y-monica-calle
"From talking to them after the show, you could see that a real friendship, even a family, had formed between the actresses as they chatted and complimented each other on their performances. The idea of sorority was also reflected in the fact that the women were naked, with many of them saying that being nude on stage was a lot less daunting knowing they were together as a whole, united in their vulnerability."