Zara and Mike Tindall were seen belting out the tunes at King Charles' Coronation concert - but his late night antics appear to have caught up with him.
The popular royal couple have had a few late night parties in recent days, having returned home at 2am after having dinner with other members of the Royal Family on the night before the ceremony.
It didn't impact them during the Coronation, but it seems the weekend's busy schedule has finally gotten to Mike.
During the concert, the England rugby legend was singing and dancing along to the music along with his royal wife.
Concert viewers flocked to Twitter to praise Mike and Zara for fully getting into the right mood.
One viewer tweeted: "Mike Tindall does look tired doesn't he! TBF… it has been a busy weekend"
"Love Mike Tindall singing along! Go Mike," added another.
A third wrote: "Mike and Zara having a seat boogie is hilarious."
"Please can I have some of whatever Mike Tindall had," tweeted a fourth.
Zara and Mike returned home at 2am after having dinner with other royals n Central London yesterday night.
The couple got the party started ahead of today's Coronation and were joined by family members including Prince Andrew, Prince Edward and Princess Anne at Mayfair club Oswald's.
Princess Beatrice and Princess Eugenie also joined the dinner with their husbands and were pictured arriving at the private club, which had a floral arch at the entrance to greet the royals.
As a venue, Oswald's prides itself on its discretion and one of its main rules is that no photography is allowed.
Oswald's is one of Mayfair's most exclusive private members club.
It was established by Robin Birley in 2017 and caters to high-profile clients including celebrities, MPs and members of the Royal Family who are looking for privacy outside of the public eye.
After the dinner, the Tindalls continued their evening at The Arts Club, which is nearby, and left at around 2am, Mail Online reports.
The couple were photographed walking outdoors after leaving the venue with a witness claiming they were "stumbling in the street while taking in all the Coronation bunting before getting into a taxi home."
Zara was wearing a navy blazer and trousers, paired with a light blue shirt, while her husband Mike wore a blue suit with a white shirt.
Prince Andrew was pictured getting out of a taxi, with a black suit paired with a black tie and a white shirt.
Last year, Prince William was spotted leaving Oswald's after a meal out with some friends.
Former Prime Minister Boris Johnson and his wife Carrie Johnson are among frequenters of the club on Albemarle Street as is Camilla, Queen Consort.
The club also attracts the likes of Dame Joan Collins, Priti Patel and David Beckham.
