Britain 's Duke and Duchess of Edinburgh expecting first child . Report : royal couple had agreed to keep news under wraps until Christmas Day . Catherine in hospital undergoing treatment for severe morning sickness . Bookmakers accepting suggestions for baby 's name and even its weight .
Britain 's Duke and Duchess of Cambridge expecting first child . Report : royal couple had hoped to keep news under wraps until Christmas Day . Catherine in hospital receiving treatment for severe morning sickness . Bookmakers accepting bets for baby 's name and even its weight .