3. Prince William and Kate Middleton – $34 million

It was a highly publicized wedding that captured the world’s attention. In 2011, Prince William, the eldest son of Princess Diana and King Charles III, married Kate Middleton at Westminster Abbey. 

The entire wedding cost a total of $34 million, with the wedding dress alone priced at approximately $516,380. Following the wedding ceremony, Prince William and Kate Middleton paraded through the streets of London in a carriage.