See how the day unfolded with Sonali and Ricky reporting in London, and Leah at a party in Kate's home village.
Prince William and his new wife step out onto the famous balcony at Buckingham Palace, and wave to the huge crowds of well-wishers lining the streets outside.
Kate whispers to her husband: "wow" - she's clearly amazed at the whole experience. They're soon joined by the other members of their families.
A huge cheer rings out as the new Duke and Duchess of Cambridge share a kiss.
Ricky says: The constant drone from the helicopters flying above Buckingham Palace is giving me a headache!
Leah says: Sending Bucklebury footage back to TVC in London - lots of kids have seen Kate around in the past!
(Leah's at a party in Kate Middleton's home village of Bucklebury in Berkshire.)
Ricky says: Sitting in a BBC satellite truck enjoying the wedding on 5 different TV screens!
The Archbishop of Canterbury has just pronounced Prince William and Kate Middleton husband and wife!
Sonali says: Newsround had an amazing view of Kate entering the Abbey. Kate Middleton arrives at Westminster Abbey, with her father Michael and her maid of honour, younger sister Pippa. What a dress!
Sonali says: just seen the groom enter the Abbey! (Can you spot him? clue: look above my head!)
Sonali says: my headpiece for the big day.
Ricky says: So here's what Sonali is wearing for the wedding day.
Ricky says: Staying bang up to date with all the guests going in and out of Westminster Abbey.
Leah says: We're here in Bucklebury village and this is how the ducks are celebrating.
Ricky says: Sonali and me LIVE on CBBC channel at Westminster Abbey this morning.
Leah says: And this is my dress!
Leah says: Just arrived at Bucklebury village - here are some Morris dancers.
Leah says: William and Kate Middleton will be the Duke and Duchess of Cambridge!
Ricky says: I'm cold!
Ore says: Royal wedding countdown! Newsround line up of Sonali, Leah and Ricky on it all day, three of the best dressed folks on telly.
Ricky says: I've got my Newsround backpack with vital supplies! Water and all kind of super energy foods!
Sonali says: We now know Prince William will get married in a red Irish Guards tunic.
Sonali says: Kate Middleton will apparently do her own make up today. Very impressive.
Sonali says: Was here less than 20 seconds when I heard these screaming Newsround fans who've been here since 3am!
Leah says: Dress. Check. Hat. Check. I'm ready for the Bucklebury Street Party! And no sight of any rain!
Ricky says: Lots of cabbies in London hanging out flags from their windows.
Sonali says: Been up for an hr already getting ready for the royal wedding.