I have'nt tried any of the diapers that are being spoke of here, I use Depends Maxinum/overnight with plastic pants or a pair of underwear over them which really helps hiding the crinkle sound. Recently I wore to a nightclub under jeans and had 2 wettings in them while standing up without any leaking, they usually are good for 2 wettings but will probably leak after that. These diapers hide really well under jeans so your friend may be more comfortable with these if wearing shorts, if you wear a skirt I would wear some pantyhose over your diapers or the crinkle will probably give away your secert. I've also worn these to concerts many times without leaking. What ever diaper you choose, one trick is to wear new black jeans, they really hide any leaks (faded black wont work}. Concerts are my favorite place to wear diapers,and would'nt suprise me if there are some others wearing there too. I've spotted a lot of girls I suspected wearing diapers at concerts (they tend to feel for leaks which kind of give them away}. I'm sure you will have a lot of fun, good luck.