It’s Casual Friday.
The black-and-white image – vintage 2006 – was snapped by photographer Fergus Greer, who had been specially commissioned by their office. The portrait was taken for the 2007 Concert for Diana, which commemorated the 10th anniversary of their mother’s death.
But it was never published and remained under wraps until now.
The photo sitting was held at the Royal Military Academy Sandhurst shortly before William, now 28, graduated as Kate Middleton watched from the stands. Harry, 26, who had preceded William at the academy, was a serving army officer at the time.
The image, to be displayed at the National Portrait Gallery beginning Feb. 7, is part of a collection that includes other well-known names in the U.K., including singer K. T. Tunstall and actors Brian Cox and Andy Serkis.