Armie Hammer is attached to star in Relativity’s “The Brothers Grimm: Snow White.”

Pic will be directed by Tarsem Singh, with Julia Roberts cast as the Queen.

The film will be less a recounting of the traditional story than a modern comedy-adventure as Snow White bands with seven quarrelsome dwarfs to reclaim her kingdom. Hammer will play Prince Andrew Alcott.

Melissa Wallack and Jason Keller penned the script; Relativity’s Ryan Kavanaugh produces, along with Bernie Goldman and Brett Ratner.

Saoirse Ronan has been reported to be in talks to play Snow White, but sources say no offer has been made. Though she’s still in the running, the age difference between Hammer and Ronan could spur the studio to seek an older actress.

Pic is one of three takes on “Snow White” currently in development. On Friday, Viggo Mortensen dropped out of Universal’s “Snow White and the Huntsman” after negotiations fell through.

Production on “The Brother’s Grimm: Snow White” begins this May, with Relativity planning to release it on June 29, 2012.

Hammer is currently filming Clint Eastwood’s “J. Edgar,” starring Leonardo DiCaprio, and was also recently seen in Sony’s “The Social Network.”

He is repped by WME and attorney Harris Hartman.