The 22-year-old is a part of the upcoming film directed by Steven Soderbergh starring Tatum, Matthew McConaughey, Cody Horn, Joe Manganiello, and Matt Bomer.
"I had never danced before. I find it very hard to put one foot in front of the other, let alone move to the rhythm. And to dance with no clothes on, that's a new level of embarrassment," Pettyfer said.
The British actor, who is engaged to actress Riley Keough, has previously dated Emma Roberts and Dianna Agron. 'Magic Mike' will hit the theatres on June 29.