A normal bath time. R and G sitting in the bath, facing each other and splashing about. G started singing 'Ro ro ro ro' and R grabbed her hands. Dh and I looked at each other - what were they doing? The girls started rocking backwards and forwards, still holding hands. They both started singing 'Ro ro ro'

We realised that they were doing 'Row row row your boat' together. They didn't quite have the song off-pat but they knew all the actions. G led the singing and as soon as she finished, R would put her hands out again and say 'More, more, more!' and they kept doing it over and over again. They looked so happy and kept giggling between songs.

It's one of those moments where you look at each other and just smile and say wow. This is one of the great things about having twins. We're so lucky.