Queen wears a luminous green outfit as she leads her entire family on the Mall for her official 90th birthday celebrationsl

The Queen (centre with The Duke of Edinburgh) stood out in a bright green outfit as she led the Royal Family to the Trooping the Colour ceremony in London today as part of her official 90th birthday celebrations. Thousands of people have lined the streets between Buckingham Palace and Horse Guards Parade to catch a glimpse of the famous faces, with the Duchess of Cambridge and Duchess of Cornwall (right) looking glamorous in white as they beamed at their fans. Prince Charles and Prince William (left) kept up the tradition of arriving on horseback, while Prince Harry (inset left), Princess Beatrice and Princess Eugenie (inset right) all looked delighted to be part of the occasion. But all eyes are likely to be on Princess Charlotte later this afternoon as she is expected to make her debut on the palace balcony when the RAF perform a flypast at 1pm. The trooping ceremony will feature 1,400 soldiers, 200 horses and more than 400 musicians.