A small mistake during Prince William and Kate’s wedding still stands out years later. One brief moment involving Queen Elizabeth II almost passed unnoticed.

Prince William gave a rare glimpse into private life with Princess Kate, but a light-hearted comment about her work habits quickly became fuel for online trolls. The Prince of Wales was discussing Kate ’s return to overseas duties after her cancer treatment when he praised her preparation for a recent trip to Reggio Emilia in Italy.

The King and Queen were greeted by cheers from well-wishers as they arrived at the wedding of the Princess Royal's son. Peter Phillips is marrying NHS nurse Harriet Sperling during a private ceremony at All Saints Church in Kemble,