Thousands of people flocked to London to watch the Trooping the Colour at Buckingham Palace on Saturday to mark Queen Elizabeth II’s official 90th birthday, with millions more watching the annual celebration from home. For decades, this tradition has been performed by British Army regiments on Horse Guards Parade to mark the monarch’s birthday. More than 1,400 officers were on parade, as well as 200 horses. Hundreds of musicians were also in attendance along with the rest of the Royal family. For highlights of this year’s event see the video here: