Kate Middleton and Prince William wave from the Buckingham Palace balcony on their April 2011 wedding day.Photo:Stephane Cardinale/Corbis via Gett

Their Royal Highnesses Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge wave to onlookers from the balcony at Buckingham Palace just after their wedding

Stephane Cardinale/Corbis via Gett

Kate MiddletonandPrince William’s royal wedding kiss was so nice, they did it twice!

Caption Kate Middleton and Prince William kiss on the Buckingham Palace balcony on their April 2011 wedding day.John Stillwell - WPA/Getty

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge kiss on the balcony of Buckingham Palace after getting married on April 29, 2011

John Stillwell - WPA/Getty

The second kissinstantly becameone of the most iconic royal wedding moments of all time and synonymous with the couple’s nuptials.

Kate Middleton and Prince William kiss on the Buckingham Palace balcony on their April 2011 wedding day.LEON NEAL/AFP via Getty

Britain’s Prince William kisses his wife Kate, Duchess of Cambridge, on the balcony of Buckingham Palace, after the wedding service

LEON NEAL/AFP via Getty

“Unlike most wedding ceremonies in the United States where the bride and groom kiss at the altar, royal newlyweds abstain from kissing during the service. Even outside the church, the kiss had long been viewed as an intimate and private moment until Prince William’s parents Charles and Diana,” ABC said in 2011.

While William’s younger brother,Prince Harry, similarly kissed his wife,Meghan Markle, on the steps of theSt. George’s Chapelat Windsor Castle on their May 2018royal wedding day, members of the royal family typically refrain from public displays of affection with their significant others.

Despite hype indicating otherwise, royal etiquette expert Myka Meierpreviously told PEOPLEthat there are no formal rules on royal couples showing romantic gestures in public — it’s at their own discretion.

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge smile following their marriage at Westminster Abbey on April 29, 2011

“Senior members of the royal family would likely not be told how to interact or when they can or can not show PDA and would be trusted to use their better judgment as to when it’s appropriate,” explained Meier, the founder and director of Beaumont Etiquette. “The royals often adjust PDA to mirror the formality of the event they are attending. At a somber or more formal event, we are less likely to see PDA than at a casual event where it would be deemed more fitting.”

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The Prince and Princess of Wales have warmed to more PDA in recent months. Katetapped her husband’s buttwhile walking the red carpet at the BAFTAs in February and again at thesecond coronation celebrationin Scotland in July, and the couple sharedanother double kissatRoyal Charity Polo Day.

Kate Middleton and Prince William embrace at the Royal Charity Polo Cup in July 2023.Karwai Tang/WireImageSamir Hussein/WireImage

Catherine, Princess of Wales and Prince William, Prince of Wales embrace at the Out-Sourcing Inc. Royal Charity Polo Cup 2023

Karwai Tang/WireImageSamir Hussein/WireImage

source: people.com