Watch Charles and Di: The Truth Behind Their Wedding for Free: How to Stream the Movie Online at 123Movies. . 20 year-old Lady Diana Spencer laughed out loud when Prince Charles proposed to her having met her only 12 times. Five months later, she walked up the aisle - watched by three quarters of a billion people around the world - to marry what people believed was her Prince Charming. This is the true story of the seven days that led to the wedding of the decade - was it doomed before it even began?