We have just started with the Bright Bots ones. Somehow all goes well if little queen doesn't wear anything but with nappies or underwear she'll pee everything wet.
I told her that these are special pants that you're not allowed to pee in
Btw everyone keeps saying they are so tiny you would need a size up but I think they are big. She's between a m and a L size so I bought the large but it's a bit big.