At the National Portrait Gallery's reopening celebration following a £41 million facelift, the Princess of Wales mingled with Sir Paul McCartney and Tracey Emin.
The 45 hand-drawn female portraits that have been cast in bronze for the central London gallery's new doors were created by Emin.
On June 28, the gallery will host a display of Sir Paul's personal images from the years 1963 and 1964.
Later this week, the gallery will welcome visitors.
"When I got here, I was nervous," Emin said.
"I completely forgot about the doors because I had so many other things on my mind.
Because it was such a big surprise, I gasped when I first stood up, which gave me more energy. ".
The princess and Sir Paul were discussing his upcoming exhibition when they met.
As she left the gallery, Kate waved to the throngs of people waiting there.
The princess was "fantastic" and "really passionate," according to Nicholas Cullinan, director of the gallery.
"Having a senior member of the Royal Family who truly cares about culture, museums, and art, as well as someone who is knowledgeable and supportive, is such a great thing for this country," he continued. ".
The National Portrait Gallery was first established in 1856, and 40 years later it moved to its current location off Trafalgar sq\.. In its Primary Collection, it has over 11,000 portraits of famous and significant British figures throughout history.