Princess Eugenie wowed in blue as she stepped out for two art exhibitions in the space of a few hours, choosing a blue shift dress for the afternoon, and changing into a black dress with a navy blue blazer for the evening.
The Queen also looked elegant in blue as she visited the Tower of London's poppy exhibition on Thursday. The monarch walked among the sea of ceramic flowers, joined by Prince Philip, as she paid tribute to fallen World War I soldiers.
Elsewhere Queen Letizia of Spain and Queen Maxima of the Netherlands wowed in shades of red as they joined their husbands for a special one-day visit. Queen Letizia looked stylish in red as she greeted the Dutch queen, who looked elegant in an aubergine-coloured peplum dress with matching wide-brimmed hat and simple jewellery.