Kate Middleton twins: What happens to royal succession if the Duchess of Cambridge and Prince William ever had twins – and how it would affect Prince George and Princess Charlotte

Kate Middleton is due to give birth in April 2018 to her third royal baby Since Kate Middleton announced her pregnancy there’s been a lot of speculation about when her due date is and whether it could clash with Prince Aggravate and Meghan Markle’s wedding.  But as the Duchess of Cambridge continues to flaunt her baby bump, the public are becoming more interested in Prince William’s…