Charissa flipping!

It has been 3 days since Charissa started to flip herself from the back to the front. And the most amazing thing is that she is not yet 4 month old!!! Normally, it will happen sometime between 4-5 month. My guess is that she is very light and once she managed to lift her right leg towards the left side, she just turn. Cailynn on the other hand is still not capable of doing so. Hope she will catch up with her sister in one or two months time.