Princess Charlotte sticks out her tongue as she rides in a car to the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel. (Andrew Milligan/pool photo via AP)
Page boys John and Brian Mulroney accompany US actress Meghan Markle as she arrives in a car for the wedding ceremony to marry Britain's Prince Harry. (Andrew Matthews/AFP/Getty Images)
Princess Charlotte waves as she rides in a car to the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel in Windsor Castle in Windsor. (Andrew Milligan/pool photo via AP)
Guests and family members arrive at St. George's Chapel at Windsor Castle for the wedding of Prince Harry and Meghan Markle. (DJane Barlow - WPA Pool/Getty Images)
Princess Charlotte after the wedding of Prince Harry and Meghan Markle at Windsor Castle. (Andrew Matthews/PA Wire)
The Duke and Duchess of Cambridge with Prince George and Princess Charlotte leave St. George's Chapel in Windsor Castle after the wedding. (Andrew Matthews/PA Wire)
Britain's Princess Charlotte holds the hand of her mother Kate, Duchess of Cambridge after the wedding ceremony of Prince Harry and Meghan Markle . (Ben Stansall/pool photo via AP)
Page boys John and Brian Mulroney accompany US actress Meghan Markle as she arrives in a car for the wedding ceremony to marry Britain's Prince Harry, Duke of Sussex. (Ian West/AFP/Getty Images)
Britain's Catherine, Duchess of Cambridge (C) arrives with Princess Charlotte (R) and bridesmaids for the wedding ceremony of Britain's Prince Harry. (Ben Stansall/AFP/Pool)
Page boys John and Brian Mulroney accompany US actress Meghan Markle as she arrives in a car for the wedding ceremony to marry Britain's Prince Harry. (Chris Radburn/AFP/Getty Images)
Kate, Duchess of Cambridge arrives with the Princess Charlotte, right, for the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel in Windsor Castle. (Ben Birchhall/pool photo via AP)
Kate, the Duchess of Cambridge arrives with Prince George, left and Princess Charlotte, right, for the wedding ceremony of Prince Harry and Meghan Markle. (Jane Barlow/pool photo via AP)
Princess Charlotte, right, arrives for the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel in Windsor Castle in Windsor. (Andrew Matthews/pool photo via AP)
Prince George, Princess Charlotte, Kate, the Duchess of Cambridge and Jessica Mulroney arrive with the bridesmaids and page boys. (Jane Barlow/pool photo via AP)
Princess Charlotte and Britain's Prince William leave after the wedding ceremony of Prince Harry and Meghan Markle at St. George's Chapel in Windsor Castle. (Jane Barlow/pool photo via AP)
Princess Charlotte and Kate, Duchess of Cambridge after the wedding ceremony of Prince Harry and Meghan Markle. (Jane Barlow/pool photo via AP)
Doria Ragland, the Prince of Wales, the Duchess of Cornwall, the Duke and Duchess of Cambridge with Prince George and Princess Charlotte leave St George's Chapel. (Jane Barlow/PA Wire)
Princess Charlotte of Cambridge arrives at the wedding of Prince Harry to Ms. Meghan Markle at St. George's Chapel, Windsor Castle on May 19, 2018 in Windsor, England. (Chris Jackson/Getty Images)
The royal wedding was full of heartwarming moments, but nobody captured the world's attention quite like Princess Charlotte, Prince George, Florence van Cutsem, Brian and John Mulroney and the other kids who attended.