Adele says she "would have self-combusted" had she known that Shania Twain had been in the audience at her recent Las Vegas residency show.
The Easy On Me singer said she "adored" Twain and could not believe she had come to the show.
Adele has just completed the second weekend of her residency at The Colosseum venue at Caesars Palace, after finally resuming her postponed run.
Posting a picture singling out the Canadian singer-songwriter on her Instagram story, she wrote: "Thank god you had a hat on @shaniatwain. I would have self-combusted had I seen it was you!!
"I adore you, I can't believe you came to my show."

Rapper Stormzy was pictured in the audience alongside Adele’s partner Rich Paul for the first show.
Her new run is scheduled to take place from November 18 and run to March 25, with the 24 rescheduled shows as well as eight extra dates.
Source: Press Association