Filming for J. Edgar, the highly anticipated Clint Eastwood-directed film about the life of FBI director J. Edgar Hoover, has officially begun in Los Angeles.

Leonardo DiCaprio will play the film's lead role, while Armie Hammer, the 24-year-old co-star of The Social Network, will play Clyde Tolson, Hoover's alleged lover and co-worker.

The film is based on a script written by Milk scribe Dustin Lance Black.

According to On Location Vacations, producers will shoot at various Los Angeles locations, including throughout the day at 506 S. Grand Ave. on February 10th.

In an interview with the Wall Street Journal, Eastwood is quoted as suggesting that the film would not address Hoover's alleged sexuality. But screenwriter Black disagreed, explaining that Eastwood was merely remarking on the rumor that Hoover was a cross-dresser.

Last week, Hammer told reporters that he's ready for a “ton of kissing scenes” with DiCaprio.

The film also stars Denis O'Hare (True Blood), Josh Lucas (Glory Road), Ed Westwick (Gossip Girl), Naomi Watts (King Kong) and Judi Dench (Casino Royale).