Queen Camilla had viewers in hysterics as she appeared to be caught off guard checking the time as superstar Lionel Richie performed for the King's Coronation concert yesterday.
The Hello singer, 73, was one of the big name acts lined up to perform at the special occasion after flying in from America to take part.
Lionel went down a storm with the crowd at Windsor Castle, but Camilla, 75, looked to be wondering when the set was going to end as she glanced down at her wrist during the set.
Taking to Twitter after Her Majesty appeared to be looking at her watch in the royal box, one viewer tweeted: "Camilla checking her watch is my Coronation Concert highlight so far."
While another teased: "Camilla wondering if she can be back to watch Shawshank Redemption at 10pm."
However, others thought Camilla was simply adjusting the special light-up bracelet given to spectators for the concert.
Lionel's gig prompted a huge singalong and applause from the royal box, who partied away along with 20,000 members of the public.
As the star performed his track Easy, the newly crowned King and Queen joined in along with Zara and Mike Tindall.
There was also some gentle swaying from the Duke of Edinburgh before Prince George and his sister Charlotte danced to All Night Long, waving their flags.
Reflecting on Charles' new role backstage ahead of his performance, Lionel said: "I think he's going to bring a new flavour."
However, it was Lionel's 'flavour' which left some fans confused after some complained the singer's voice had changed.
One said:"What the hell has happened to Lionel Richie's voice? He sounds completely different and is terrible live! #CoronationConcert," as another added: "What happend to Lionel his voice? My ears.... #CoronationConcert."
Lionel previously described performing at the concert as "a once-in-a-lifetime event" and an "honour and celebration".
He was joined by the likes of Katy Perry and Take That on stage, who went down a storm with the crowd.
Speaking about what an honour it was to be asked to perform at the historic event, Lionel told People: "I mean, you don't get in the business and say, 'You know what? I'll be at the King's coronation.' You know, that just never comes up. It's A, a surprise. B, what an honour. And C, the fact of all the names that are out there that he could have had for this, he called my name," he said of the privilege of being asked to perform at the concert.
"I really do celebrate his now stepping into the king role. He's been in that prince role for a long time, but I'm anxious to see what he's going to now change as far as his reign. And so I know him as a wonderful person."