"I was sort of tricked into it," Theron just told me at the Governors Ball. "I thought it was going to be something smaller, like he pulls me up from the audience and we do a little spin. But then he was was like, 'Rehearsals start Monday!'"
So what was it like waltzing across the stage in front of a gazillion people worldwide?
"Completely nerve-wracking," Theron said. "I thought I was going to have to wear one of my son's diapers!"
But then she gushed, "How could I not dance with Channing Tatum? He's so wonderful!"
But why didn't Mr. Tatum strip just a little bit? After all, Magic Mike was one of the biggest success stories last year in Hollywood.
"No," Theron said with a laugh. "He's so classy—and he's about to be a dad!"
Meanwhile, Catherine Zeta-Jones said she hope she gets another chance to do a musical soon. "I loved it," she said about performing "All That Jazz" tonight. "It was great to be back after 10 years."