Inside Pippa Middleton's wedding to James Matthews

Middleton's nephew and niece, Prince George and Princess Charlotte, served in her bridal party.
2:26 | 05/20/17

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Transcript for Inside Pippa Middleton's wedding to James Matthews
to the closest thing to a royal wedding as pippa Middleton, younger sister of the duchess of Cambridge ties the knot today. Talking about the story all morning and ABC's lama Hasan in englefield with what's called Britain's wedding of the year. Good morning to you. Good morning to you, guys. Yes, I bet you can't wait to hear all about it. The excitement is building. The crowd of well wishers is growing. It can only mean one thing, pippa Middleton's big day. As we speak she's tying the knot to James Matthews in the church behind me, a prime spot watching all comings and goings and can report the bride looked absolutely gorgeous. This morning, the young Royals out in full force. Joining the creme de la creme of British society for the wedding of the year. Squeezing into this tiny church in englefield to watch pippa Middleton and fiance James Matthews say their "I dos." The church itself is not too big, a place she holds very dear and wanted to have that local feel. Reporter: The bride wearing an original by British designer Geils deacon. Only 100 guests attending including close friends and the royal family including Kate and prince William but sure to steal the show, pippa's niece and nephew prince George and princess Charlotte who are serving in the wedding party. Kate did say that she was a little worried they might not behave obviously they're only 3 and 2. Reporter: Kate will have her hands full tending to the little ones. In keeping with tradition, the maid of honor duties go to a close unmarried friend. Prince Harry attending taking a significant step in his relationship with Meghan Markle. We understand he is going to bring his girlfriend Meghan Markle so that will be one of their first public appearances together. Reporter: After the service the guests then leaving in style traveling the six miles to the Middleton's home of bucklebury. Pippa's parents have installed this enormous marquee and outdoor palace of sorts. The perfect venue for commoners to rub shoulders with British royalty. Now, the champagne will be flowing and a lavish spread for the lucky 300 guests going to the reception later and with reports asks guests to bring two different outfits you can bet they will be partying into the wee hour, not us, of course, we will be working. Yeah, such is the life of a commoner. Thank you very much, we really appreciate it. Man, those kids are cute. Coming up, Tom Brady's agent

This transcript has been automatically generated and may not be 100% accurate.

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