I danced for 7 or 8 years & my mum wanted me to wear knickers, but I hated it. I knew you could see them & the other girls didn't have to, so I didn't see why i should!
As I got older, mum couldn't tell me what to do & mine was always washed when I wore it.
I didn't really think of it with DD. Again, I always washed it, so didn't really think of it