So E is almost 21 months. With a bare bum, she is awesome, rarely has an accident and just takes herself to the potty often. With pants or training pants not quite so much success. She is such an independent little thing and if she has something on her bum, I don't know if it's because she assumes it's a nappy or because she is only just developing the coordination to attempt to undress herself, she has accidents. I'm fine with bare bum at home but can't do this so much at daycare and I don't want her to regress from what she has achieved so far. She is pretty good at telling me that she needs to go but any suggestions for little miss independence?