The couple met in 2003 while working at the Montreal Grand Prix
It's the detail of a royal wedding that we seem to love.
The dress was designed by Sassi Holford in ivory duchesse satin with a lace bolero jacket and a two-metre train.
The tiara was on loan, just for the day, from Princess Anne, while the jewellery was a gift from Peter Phillips to his new bride.
Then there were the guests. There were 300 in all, 70 of whom flew over from the bride's home country of Canada.
But, by the standards of royal weddings, this couldn't have been a more low-key affair.
On the streets of Windsor many of those who turned up to watch the Changing of the Guard didn't even realise that, later in the day, the first of the younger generation of royals would marry behind the Berkshire castle's walls.
And even when they found out what was happening, many hadn't heard of either the bride or groom.
It was a reflection of the fact that, for the past five years, this relationship has been conducted in private.
The wedding of Peter and Autumn Phillips was a very modern royal occasion
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