The British star previously said she was "literally borderline alcoholic" in her 20s.
“He’s probably the best comedic character of all time,” the British star said.
The Irish rockers will launch their Sin City residency on Sept. 29.
The new shows will begin in March.
The singer stopped her residency show on Saturday to ask why security were so focused on a young man standing up and singing during her performance.
“When I sing 'everybody on mute,'" you have to be f---ing quiet," the superstar singer said.
"You did amazing," the pop star told River Rose after their performance of "Heartbeat Song."
Shania Twain: COME ON OVER – The Las Vegas Residency – All The Hits! kicks off in May 2024.
The show featuring her stripped-down hits and Great American Songbook selections will be back on stage starting Aug. 31.
Tickets for the singer's first stay-put will go on sale on August 9.
