"Don't get pregnant," the 83-year-old actress jokes to Usmagazine.com. The former Dancing With the Stars contestant also wants to share her dancing tips with the star, who recently taped a performance for So You Think You Can Dance.
"Take a lot of breaks and eat," she said at the National Dance Institute event celebrating John Lennon in NYC Monday. "I gained weight! Everybody said I'd lose weight, [but] I gained weight! What? Another pound? Couldn't be possible, but it was."
She added: "[Go] slowly at first. You know, you see where you're going and you get yourself centered. Don't get out of whack or something can go crazy."
Holmes, mother to three-year-old Suri, will pay homage to Judy Garland by dancing to "Get Happy" in an upcoming episode of the Fox show.