Caption: The Duke of Edinburgh and the Duchess of Cambridge continue to laugh following his joke as the Queen watches the proceedings
Members of the royal family have come out in force to honour the Queen as a special gala to mark her 90th birthday gets underway at Windsor Castle.
Her Majesty arrived at the event in a horse-drawn carriage accompanied by her husband the Duke of Edinburgh wearing a a sea green dress with lace overlay, and matching jacket by Angela Kelly.
The extravaganza featured 900 horses, a host of songs and dancing with rumours swirling that there could be a 'surprise' royal performance. Click link for full post from The Daily Mail.