Most girls at dancing tend to wear knickers under them but personally I think it looks terrible! The knickers are all bumpy, get caught up in the leotard, can be seen under the leotard and generally spoil the whole look if that makes sense?

When DD did dancing, provided her leotard was not too tight we went knickerless - I washed it after each class and it wasn't like she was "Flashing" anything.