ET also has new details from inside the newlyweds' regal receptions.
From celebrity guests to the Duchess of Sussex's dress, ET provides live updates of all the must-see moments from their nuptials.
From lace to sleeves, here's a look at all the ways the royal brides' gowns echoed one another's -- and the many ways in which they were totally unique.
Royals re-wear outfits too!
Harry is going a different route than his older brother, and will exchange rings with bride Meghan Markle at the royal wedding on Saturday.
The Duchess of Cambridge is ready to watch Prince Harry and Meghan Markle say 'I do!'
Their 3-week-old little brother, Prince Louis, was not expected to attend the wedding.
The bride and groom have been named the new Duke and Duchess of Sussex.
Only two days until the lovebirds say "I do!"
The couple will officially become husband and wife on May 19.
The late Princess Diana, Kate Middleton and more royal brides stunned in intricate designs on their wedding days -- click through the gallery to see some of the most memorable designs.
ET breaks down all the latest updates from the couple ahead of their May 19 nuptials!
ET's royal expert Katie Nicholl dished on why the young Prince might 'break Royal tradition' and rock his ring after his wedding day -- unlike his older brother.
From the venue, to the guest list and even the cake, ET breaks down the ways Harry and Meghan are expected to break royal tradition.
