My DD has never had a haircut, age 21 months and has long blonde hair which I love because it is really fine so I can put it in a pony tail and it doesn't flop in her face. But my mum thinks we should cut it so that it gets thicker. I think this is a myth - is it?? If it did make it thicker, I would give her a crew cut! Poor little mite has my thin hair...