Amy Adams has signed to portray Lois Lane in Warner Bros. untitled Superman reboot opposite Henry Cavill as the Man of Steel with Zack Snyder directing.

Adams joins Kevin Costner and Diane Lane, who have signed on to portray the adoptive father and mother of Superman. Warner Bros. made the official announcement Sunday. “Amy has the talent to capture all of the qualities we love about Lois: smart, tough, funny, warm, ambitious and, of course, beautiful,” Snyder said in the announcement.

Adams, last seen in “The Fighter,” will next be seen in Walter Salles’ “On the Road” with Viggo Mortensen and in “The Muppets.”

Snyder told Variety at Wednesday’s premiere for “Sucker Punch” that shooting will begin in August. Warner and Legendary Pictures have said that the reboot of the tentpole franchise would hit theaters in December 2012.

Charles Roven, Emma Thomas, Christopher Nolan and Deborah Snyder are producing, with Legendary topper Thomas Tull and Lloyd Phillips exec producing.

Plot details remain under wraps. Screenplay’s being penned by David S. Goyer, based on a story by Goyer and Nolan.

Lois Lane first appeared along with Superman as his romantic interest and a reporter in the first issue of the Action Comics series in 1938. She was portrayed by Margot Kidder in four “Superman” pics and by Kate Bosworth in the last iteration of The Man of Steel, the Brandon Routh starrer “Superman Returns,” which grossed $391 million in 2006.

By getting the Superman reboot into theaters for holiday 2012, Warners will have a pair of powerhouse entries, as Peter Jackson’s “The Hobbit Part One” is due for release at the same time.