The most expensive royal weddings of all time, including that of Prince Charles and Lady Diana Spencer(Image: PA Archive)

With millions of pounds expected to be splashed out on Prince William and Kate Middleton's wedding, we take a look at some of the most extravagant and costly royal weddings of all time.

Brace yourselves, none of these royal weddings have been done on a shoestring budget, or even anywhere near the £21,000 the average UK couple splash out on their big day.