TOPSHOT - Britain's Princess Charlotte of Wales (R) has her candle blown out by Britain's Prince Louis of Wales (L) at the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)

TOPSHOT - Britain's Prince George of Wales (L), Britain's Princess Beatrice of York's stepson Christopher (2L), Britain's Princess Charlotte of Wales (2R) and Britain's Prince Louis of Wales (R) attend the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)

TOPSHOT - Britain's Prince William, Prince of Wales (L), Britain's Prince George of Wales (2L), Britain's Catherine, Princess of Wales (R), Britain's Prince Louis of Wales (C) and Britain's Princess Charlotte of Wales (2R) attend the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by HENRY NICHOLLS / AFP) (Photo by HENRY NICHOLLS/AFP via Getty Images)

Britain's Princess Charlotte of Wales (C) attends the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)

Britain's Princess Charlotte of Wales (2R) has her candle blown out by Britain's Prince Louis of Wales (3R) at the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)

Dean of Westminster, David Hoyle (L), Britain's Prince William, Prince of Wales (2L), Britain's Prince George of Wales, Britain's Prince Louis of Wales (C), Britain's Catherine, Princess of Wales (3R) and Britain's Princess Charlotte of Wales (2R) leave the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)

Britain's Prince George of Wales (L), Britain's Princess Charlotte of Wales (C) and Britain's Prince Louis of Wales (R) attend the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)

Britain's Princess Charlotte of Wales (C) attends the "Together At Christmas" Carol Service" at Westminster Abbey in London on December 8, 2023. The event will be broadcast as part of 'Royal Carols: Together At Christmas', a special programme, airing at 7:45pm on ITV1 and ITV X on Christmas Eve. (Photo by Chris Jackson / POOL / AFP) (Photo by CHRIS JACKSON/POOL/AFP via Getty Images)