""Apart from anything else modesty shorts are not a standard item""
""no one wears these, no one has heard of them this is a NON ISSUE""
I'm in Liverpool, my teen DD's wear TOWIE (but with a Liverpool twist) type outfits to go to Dance Festivals (they wear play suits as well).
The little dresses that they and their friends wear are just about Arse skimming, they wear this type outfit around the world (wherever there is a Electric Dance Event).
Modesty shorts are a standard item, but they aren't called that, they are "boy short" type knickers in Lycra.
Primark has them, so do most shops, it's just because you aren't looking for them, or wearing TuTu type skirts, think Burlesque knickers.
They let you wear sanitary protection, without fear (bearing in mind you are dancing and drinking etc) and they mean you don't have to sit "like a lady", or be arsed about hair removal etc.
They certainly are not for modesty, my DD's and their friends aren't usually wearing bras and the dress has very little fabric.
The not wearing of them could never be seen as contributing to an assault, very little clothing is stand and festival/holiday wear.