Credit: Todd Williamson/; James Devaney/

What's Suri Cruise really like?

Hunky Channing Tatum found out when he worked with Suri's mom Katie Holmes earlier this month on the crime thriller Son of No One, and the famous four year-old paid a one-day visit to the film's NYC set.

"[She's] a happy, playful little girl!" Tatum told at Monday's premiere of his film Earth Made of Glass in NYC. The fashionable celeb tot has been seen all over the Big Apple in recent months (frolicking in the snow, wearing bunny ears, sipping from a bottle).

On set, Suri and her mom "definitely" seemed close, Tatum added.

And Tatum, who's married to actress Jenna Dewan, raved about his 31-year-old costar Holmes, "She's already wrapped on the film," he explained. "I wanted to do more stuff with her. She really brings it in the movie --- just you watch!"

To fete her fourth birthday two weekends ago, Suri had a decorate-your-own cupcake party with her parents and pals at the Cruise clan's Beverly Hills home.