Prince William and Kate Middleton will attend England and Wales' Six Nations match on Saturday as the teams clash for the first time since Kate was named as England Rugby's new patronage.The 40 year old's husband, Prince William, is the patron of Wales Rugby, meaning the married couple will be rivals as they watch on at Twickenham Stadium. Royal expert Katie Nicholl tells OK! there is a "competition" between the pair as they gear up to cheer on their respective teams.