01of 21Press Association via AP ImagesPrince Edward’s teenage daughter, Lady Louise Windsor, keepsPrince George, 5, andPrincess Charlotte, 3, in line.
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Press Association via AP Images

Prince Edward’s teenage daughter, Lady Louise Windsor, keepsPrince George, 5, andPrincess Charlotte, 3, in line.
02of 21James Gourley/REX/ShutterstockGeorge sits ahead of his little sis.
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James Gourley/REX/Shutterstock

George sits ahead of his little sis.
03of 21James Gourley/REX/ShutterstockCharlottegives another of her signature waveson approach to the chapel.
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Charlottegives another of her signature waveson approach to the chapel.
04of 21YUI MOK/AFP/Getty ImagesPrince Georgemakes his way up the chapel steps.
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YUI MOK/AFP/Getty Images

Prince Georgemakes his way up the chapel steps.
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06of 21Press Association via AP ImagesAnother “hello” from Charlotte, who handles the blustering winds like a pro.
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Another “hello” from Charlotte, who handles the blustering winds like a pro.
07of 21YUI MOK/AFP/Getty ImagesThe little ones have some fun on their walk down the aisle. In addition to George and Charlotte, the bridal party includes their cousins: 4-year-old Mia Tindall; Savannah, 7, and Isla Phillips, 6; and 5-year old Maud Windsor. Non-family includes Theodora Williams, 6, the daughter of British singer Robbie Williams and his wife Ayda Field, and Louis De Givenchy, 6, the son of Zoe and Olivier De Givenchy.
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The little ones have some fun on their walk down the aisle. In addition to George and Charlotte, the bridal party includes their cousins: 4-year-old Mia Tindall; Savannah, 7, and Isla Phillips, 6; and 5-year old Maud Windsor. Non-family includes Theodora Williams, 6, the daughter of British singer Robbie Williams and his wife Ayda Field, and Louis De Givenchy, 6, the son of Zoe and Olivier De Givenchy.
08of 21Tim Rooke/REX/ShutterstockThe bridesmaids make their way into the ceremony.
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Tim Rooke/REX/Shutterstock

The bridesmaids make their way into the ceremony.
09of 21DANNY LAWSON/AFP/Getty ImagesWhy do royal children behave so well during weddings? As Myka Meier ofBeaumont Etiquette, which was founded in Kensington and teaches courses on etiquette at The Plaza Hotel in New York City,told PEOPLEfollowingPrince HarryandMeghan Markle’s wedding, it’s a result of practice, practice, practice.
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DANNY LAWSON/AFP/Getty Images

Why do royal children behave so well during weddings? As Myka Meier ofBeaumont Etiquette, which was founded in Kensington and teaches courses on etiquette at The Plaza Hotel in New York City,told PEOPLEfollowingPrince HarryandMeghan Markle’s wedding, it’s a result of practice, practice, practice.
10of 21Press Association via AP ImagesThe children follow the bride and her father, Prince Andrew, up the aisle.
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The children follow the bride and her father, Prince Andrew, up the aisle.
11of 21Princess Charlotte, Savannah Phillips and Prince George.YUI MOK/AFP/GettyGeorge covers up his mouth in a funny candid moment.
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Princess Charlotte, Savannah Phillips and Prince George.YUI MOK/AFP/Getty

George covers up his mouth in a funny candid moment.
12of 21Press Association via AP ImagesAs with Harry and Meghan’s wedding, the children stay in a room to the side during the ceremony, returning to escort the bride and groom back down the aisle after they sign the marriage register.
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As with Harry and Meghan’s wedding, the children stay in a room to the side during the ceremony, returning to escort the bride and groom back down the aisle after they sign the marriage register.
13of 21GettyGeorge and Charlotte bring up the rear.
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Getty

George and Charlotte bring up the rear.
14of 21Press Association via AP ImagesCould they be any cuter?
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Could they be any cuter?
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Nomisstepshere!
18of 21Tim Rooke/REX/ShutterstockAnother windy wave from Charlotte,a wedding party pro.
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Another windy wave from Charlotte,a wedding party pro.
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The kids on their best behavior, with the family of the bride — from left, Sarah Ferguson, Duchess of York,Princess Beatriceand Prince Andrew, plus the groom’s mother, Nicola.
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Everyone say “cheese!”
21of 21Tim Rooke/REX/ShutterstockGeorge shows off his serious side.
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George shows off his serious side.
source: people.com