Reese Witherspoon

Actress Reese Witherspoon arrives for the Oscar presentations on Feb. 28, 2016, at the Dolby Theatre in Los Angeles.

Actress Sofia Vergara, left, as Daniella Riva, with Reese Witherspoon as Cooper in the 2015 comedy "Hot Pursuit."

Actress Reese Witherspoon arrives for the Variety Power of Women luncheon on Oct. 9, 2015 at the Beverly Wilshire Hotel in Beverly Hills, Calif.

Actress Reese Witherspoon makes an appearance on "The Tonight Show Starring Jimmy Fallon" on Dec. 2, 2014, at Rockefeller Center in Manhattan.

Actress Reese Witherspoon as writer Cheryl Strayed in 2014's "Wild," a film based on the writer's 2012 memoir of her 1,100-mile trek along the Pacific Crest Trail in 1995.

Writer Cheryl Strayed, left, with actress Reese Witherspoon promote "Wild" on Oct. 13, 2014, during a film festival at The Mayfair Hotel in London, England. The film is based on Stayed's memoir of her trek in 1995 along the Pacific Crest Trail.

Reese Witherspoon promotes "Wild" during the 58th BFI London Film Festival at Odeon Leicester Square on Oct. 13, 2014, in London, England.

Honorees Jennifer Lopez (left) and Reese Witherspoon attend the Variety Power of Women presented by Lifetime at Beverly Wilshire Four Seasons on Oct. 10, 2014, in Los Angeles.

Arnold Oceng, from left, Reese Witherspoon and Sarah Baker in 2014's "The Good Lie."

Reese Witherspoon and Corey Stoll in 2014's "The Good Lie."

Reese Witherspoon as Juniper in 2012's "Mud."

Reese Witherspoon arrives at the 69th Golden Globe Awards at the Beverly Hilton Hotel in Beverly Hills, California, on Jan. 15, 2012.

Robert Pattinson and Reese Witherspoon appear in 2011's "Water for Elephants," a romantic drama about a former veterinary student who takes a job in a traveling circus and falls in love with the ringmaster's wife. The novel was written by Sara Gruen in 2006.

Robert Pattinson and Reese Witherspoon, co-stars in the movie "Water For Elephants," at the 46th annual Academy of Country Music Awards in Las Vegas on April 3, 2011.

Reese Witherspoon and Paul Rudd in the 2010 film "How Do You Know."

Reese Witherspoon and Chris Pine in 2012's "This Means War."

Reese Witherspoon as Kate and Vince Vaughn as Brad in the romantic comedy "Four Christmases."

Robert Duvall as Howard and Reese Witherspoon as Kate in the romantic comedy Four Christmases."

Ryan Phillippe arrives with Reese Witherspoon at the Academy Awards in Los Angeles on March 5, 2006.

Reese Witherspoon, nominated for best actress in a musical or comedy for her work in "Walk the Line," arrives with her husband, actor Ryan Phillippe, for the 63rd annual Golden Globe Awards on Monday, Jan. 16, 2006, in Beverly Hills, Calif.

David (Mark Ruffalo) and Elizabeth (Reese Witherspoon) in 2005's "Just Like Heaven."

Reese Witherspoon at the premiere of "Just Like Heaven," Sept. 8, 2005, in Los Angeles.

Joaquin Phoenix, and Reese Witherspoon as Johnny Cash and June Carter in 2005's "Walk The Line."

James Purefoy and Reese Witherspoon star in Mira Nair's 2004 film "Vanity Fair."

Reese Witherspoon accepts the award for best comedic performance for her role in "Legally Blonde" at the MTV Movie Awards in Los Angeles, Saturday, June 1, 2002.

Actors Reese Witherspoon, right, and her husband, Ryan Phillippe, during a Los Angeles Lakers' game against the Portland Trail Blazers, Friday, March 29, 2002, in Los Angeles.

Presenters Reese Witherspoon and Ryan Phillippe arrive at the 74th annual Academy Awards on Sunday, March 24, 2002, in Los Angeles.

Actress Reese Witherspoon accepts the award for Choice Movie of the Summer for the movie "Legally Blonde" during the Teen Choice Awards in Los Angeles, Sunday, August 12, 2001.

Actress Reese Witherspoon waves to the crowd as she arrives for a screening of "A.I. Artificial Intelligence" Thursday, June 28, 2001, in Beverly Hills, California.