Prince William and Kate Middleton's wedding kiss is one of the most memorable and iconic moments in the history of the royal family. And their royal wedding smooch is more popular than Prince Harry and Meghan Markle’s kiss.

TV channel History recently polled the nation to know which kisses within and outside the royal family has struck them the most. The Duke and Duchess of Cambridge received 24 percent of the votes, while the Duke and Duchess of Sussex just received 15 percent of the votes.

But even though Prince William and Middleton’s kiss topped Prince Harry and Markle on the poll, they weren’t able to surpass the votes that Prince Charles and Princess Diana received. The former couple received 25 percent of the votes, and they also ranked first in the poll.

A spokesperson for the network called the Prince and Princess of Wales’ royal wedding kiss iconic and revealed that they didn’t plan on kissing each other in public.

“The photo of Charles and Diana is iconic but it wasn’t even planned, as they had forgotten to kiss at the end of the ceremony. Of course, the kiss is imbued with poignancy when we look back on it now, as we know the tragic fate that awaited the People’s Princess,” the spokesperson said.

In the book “Andrew: The Playboy Prince,” royal author Andrew Morton revealed that it was the Duke of York who encouraged his older brother to kiss his new bride while they were standing on the balcony of the Buckingham Palace.

“As bride and groom waved happily to the hundreds of thousands thronging outside the Palace, Andrew urged Charles: ‘Give her a kiss!’ Big brother obliged, to the delight of the nation,” Morton said.

Years later, Prince William and Middleton followed in Prince Charles and Princess Diana’s footsteps. They also kissed each other in front of the crowds after their wedding ceremony. Prince Harry and Markle also did the same thing on the steps of St. George’s Chapel in Windsor Castle.

Kate Middleton Prince William wedding
Britain's Prince William and his wife Catherine, Duchess of Cambridge, kiss as they stand next to bridesmaids Grace van Cutsem (L) and Margarita Armstrong-Jones (R) on the balcony at Buckingham Palace with other members of the Royal Family, after their wedding in Westminster Abbey, in central London April 29, 2011. Reuters