We all know Trooping The Colour — the queen's official birthday — is the time for pomp and pageantry; for Prince George and Princess Charlotte balcony appearances, and for Kate Middleton to showcase her latest Jane Taylor cocktail hat; but the queen's actual birthday on April 21 is usually a more low-key affair. Low key, yes, but thanks to a very quirky combination of royal duties, she has also had her fair share of weird and wonderful birthday treats — including six thousand singing children, traditional feasting in a remote Korean village, making a solemn vow in the depths of South Africa, and more.