Moore is in talks to play an older woman who tempts Pettyfer, a newcomer to exotic dancing, in upcoming movie Magic Mike, which is based on Tatum's brief stint stripping at the age of 19 before finding fame as an actor. Tatum will star as Pettyfer's mentor.
And the 48-year-old actress, who bared all in 1996 movie Striptease, is said to be thrilled about joining the cast.
A source tells Eonline.com, "Demi met with (director) Steven Soderbergh at Soho House in West Hollywood last week to discuss the film, and she loved it. She's so excited about the role."
Production is slated to begin in Los Angeles in August.