Here are a few fun facts about their big day. Royals fans, you're welcome.
Throughout the United Kingdom, citizens were given the day off to celebrate. The offer extended to British territories like Bermuda, Turks and Caicos, and the Falkland Islands.
These versions of their military attire were custom-made for the day with sweat-wicking materials, in the hopes of keeping them cool in stuffy Westminster Abbey.
The junior bridesmaids and flower girls wore flower crowns modeled after the one Carole Middleton wore in her own wedding in 1980.
How perfect! The petite arrangement also contained hyacinth and lily of the valley.
Or around $1.1 million. That's a whole lotta Sweet William.
English field maples lined the aisle of Westminster Abbey, and following the wedding they were replanted at Prince Charles' vacation home in Wales.
After getting a few weeks' worth of lessons, the soon-to-be duchess created her own softly romantic look.
And of course, her engagement ring is famously the same sapphire-and-diamond stunner that William's mother Princess Diana wore.
If you were watching the ceremony, you may have noticed that the ring exchange only went one way. That's not so much royal tradition as it is William's personal preference. The whole world does know he's taken, after all.
Nearly 2,000 people were crammed in to watch the ceremony, with nobles and dignitaries sharing air with celebs like David and Victoria Beckham.
Some of the lace on her dress was old, her diamond earrings were a new gift from her parents, her tiara was on loan from the queen, and Sarah Burton of Alexander McQueen sewed a blue ribbon inside her dress.
The newlyweds left Buckingham Palace in an Aston Martin that Prince Charles received for his 21st birthday. William and Kate's pals had decorated it with balloons, ribbons, and a "JU5T MARRIED" license plate.
A very formal lunch hosted by the queen followed the ceremony, and then William and Kate hosted close family and friends later that night. There was the traditional eating, drinking, and dancing.
What kind of cake do you get when you can dream up any cake in the world? Well, fruitcake. They are British, after all.
She sang several of her hits, as well as a beautiful cover of Elton John's "Your Song."
William kept her — and the paparazzi — in the dark until they left. It turned out that he had planned two weeks in a private villa in the secluded Seychelles islands off the coast of Africa.