Britain's Princess Charlotte of Cambridge and Britain's Prince George of Cambridge hold hands with their father, Britain's Prince William, Duke of Cambridge, as Britain's Prince Louis of Cambridge is carried by his mother, Britain's Catherine, Duchess of Cambridge after his christening service at the Chapel Royal, St James's Palace, London on July 9, 2018. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images) (credit:DOMINIC LIPINSKI via Getty Images)
(02 of08)
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TOPSHOT - Britain's Princess Charlotte of Cambridge and Britain's Prince George of Cambridge hold hands with their father, Britain's Prince William, Duke of Cambridge, as Britain's Prince Louis of Cambridge is carried by Britain's Catherine, Duchess of Cambridge on their arrival for his christening service at the Chapel Royal, St James's Palace, London on July 9, 2018. (Photo by Dominic Lipinski / POOL / AFP) (Photo credit should read DOMINIC LIPINSKI/AFP/Getty Images) (credit:DOMINIC LIPINSKI via Getty Images)
(03 of08)
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LONDON, UNITED KINGDOM - JUNE 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince George of Cambridge, Prince Louis of Cambridge (sucking his thumb) and Princess Charlotte of Cambridge look out of a window of Buckingham Palace as they attend Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. The annual ceremony involving over 1400 guardsmen and cavalry, is believed to have first been performed during the reign of King Charles II. The parade marks the official birthday of the Sovereign, although the Queen's actual birthday is on April 21st. (Photo by Max Mumby/Indigo/Getty Images) (credit:Max Mumby/Indigo via Getty Images)
(04 of08)
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LONDON, UNITED KINGDOM - JUNE 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 24 HOURS AFTER CREATE DATE AND TIME) Prince Louis of Cambridge and Princess Charlotte of Cambridge wave from a window of Buckingham Palace as they attend Trooping The Colour, the Queen's annual birthday parade, on June 8, 2019 in London, England. The annual ceremony involving over 1400 guardsmen and cavalry, is believed to have first been performed during the reign of King Charles II. The parade marks the official birthday of the Sovereign, although the Queen's actual birthday is on April 21st. (Photo by Max Mumby/Indigo/Getty Images) (credit:Max Mumby/Indigo via Getty Images)
(05 of08)
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(credit:Karwai Tang via Getty Images)
(06 of08)
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(credit:Max Mumby/Indigo via Getty Images)
(07 of08)
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(credit:Max Mumby/Indigo via Getty Images)
(08 of08)
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LONDON, ENGLAND - JUNE 08: Prince Louis, Prince George, Prince William, Duke of Cambridge, Princess Charlotte and Catherine, Duchess of Cambridge appear on the balcony during Trooping The Colour, the Queen's annual birthday parade, on June 08, 2019 in London, England. (Photo by Samir Hussein/WireImage) (credit:Samir Hussein via Getty Images)