More than 600 guests have been invited to the ceremony with 1,000 members of the public being welcomed to the grounds of Windsor Castle. Even the Spice Girls have been invited.
Prince Harry has now announced his older brother, the Duke of Cambridge, as his best man.
Scottish brides and grooms may not be able to claim a royal in their bridal party, or invite popstars, but there is not shortage of regal venues across the country to make a fairytale wedding.