Britain's Queen Elizabeth has been celebrating her 90th birthday year in 2016. Photo / AP
A photograph of the Queen and Prince Charles has been released to mark the end of the monarch's 90th birthday year.
The previously unseen picture, taken by fashion photographer Nick Knight in May, shows the mother and son in the White Drawing Room at Windsor Castle before the final night
of the Queen's celebrations at the Royal Windsor Horse Show.
Charles, wearing a black dinner jacket, appears to be smiling at the Queen - dressed in a sea green and dove grey brocade dress by Angela Kelly - who is looking directly ahead.
The Queen turned 90 in April and marked the milestone with a series of events - including a private black tie banquet at Windsor Castle with her friends and loved ones.
