And of course they're not alone, they're surrounded by friends, family and guests, including fellow members of the royal family and celebrity A-listers.
Like any high profile wedding, it's an opportunity to see some of the most glamorous style, with attendees wearing some of the biggest names in fashion.
See everyone's outfits from the royal wedding .
Amal Clooney leads the best dressed in a gorgeous Stella McCartney yellow cap-sleeved pleated dress with an asymmetric hem and a matching saucer style hat.
Talk show host Oprah Winfrey looks pretty in a pink scalloped dress, with a matching hat.
Sofia Wellesley arrived with husband James Blunt wearing a floral patterned midi dress and a nude hat.
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