Even if they dont work most resort pools wont let your child swim without them... As your DD is 8 mths they will hold in her Number 2's but like everyone has said nat many hold in the wee... So keep in mind that if she gets a upset tummy and her 2's become like 1's then it too could leak out....

Only know as when DS was 6 weeks we took him for a swim ( thank goodness at a river ) anyway you know know how runny BF bubs are.... Lets just say the fish though all there christmas'a had come at once... lol plus DS was a vomiter .... sorry TMI....