William, Kate’s third child Prince Louis christened

FILE - In this file photo dated Monday, April 23, 2018 Kate, Duchess of Cambridge holds her newborn baby son, to be named Prince Louis, as she leaves the Lindo wing at St Mary’s Hospital in London London. The Christening of Prince Louis, third child of the Duke and Duchess of Cambridge, will take place Monday July 9, 2018, at Chapel Royal in St. James’s Palace, London. (AP Photo/Kirsty Wigglesworth, FILE)

Pippa Middleton and her husband James Matthews arrive for the christening service of Prince Louis at the Chapel Royal, St James’s Palace, London, Monday, July 9, 2018. (Dominic Lipinski/Pool Photo via AP)

Britain’s Prince Harry and Meghan Duchess of Sussex leave after the christening service of Prince Louis at the Chapel Royal, St James’s Palace, London, Monday, July 9, 2018. (Dominic Lipinski/Pool Photo via AP)

Britain’s Prince Charles and Camilla Duchess of Cornwall arrive for the christening service of Prince Louis at the Chapel Royal, St James’s Palace, London, Monday, July 9, 2018. (Dominic Lipinski/Pool Photo via AP)

Britain’s Prince Harry and Meghan Duchess of Sussex leave after the christening service of Prince Louis at the Chapel Royal, St James’s Palace, London, Monday, July 9, 2018. (Dominic Lipinski/Pool Photo via AP)

Britain’s Prince William and Kate, Duchess of Cambridge with their children Prince George, Princess Charlotte Prince Louis as they arrive for Prince Louis’ christening service at the Chapel Royal, St James’s Palace, London, Monday, July 9, 2018. (Dominic Lipinski/Pool Photo via AP)