“I’m trying to keep up with 20-year-old dancers on stage, and that’s a 40- …

“I’m trying to keep up with 20-year-old dancers on stage, and that’s a 40-year difference,” Donny Osmond says. “The truth is, when I’m on stage, I feel like I’m in my 30s.” (Denise Truscello/Caesars Entertainment)