I haven't had it - my first, my sister didn't have any with her two, my mum didn't have any with her 3 and my Nan never had it with her two, so I think there may be something in it. Mum and Nan had a mixture 1 Boy, 2 Girls and 1 Boy and 1 Girl, my sister had 2 Boys. So I don't think the sex has much of a difference, although a lot say the girls bring it on!!