Superfans of the royal wedding have been camping for days on the Mall to secure their spot for the nuptials.
But they weren't expecting that their dedication would give them a chance to meet Prince William.
The future King stunned thousands of well-wishers when he turned up for an impromptu walkabout on the Mall.
There were huge cheers – and quite a few tears of happiness – when the Prince arrived with his brother Prince Harry from Clarence House at about 8.30pm.
A sea of hands reached out and camera phones were raised in their hundreds as William moved along the crowds to thank people personally for their support.
Photo: © Rex