George Clooney and Amal Clooney attend 'Un Muro o Un Ponte' Seminary held by Pope Francis at the Paul VI Hall on May 29, 2016 in Vatican City, Vatican.
Actor George Clooney attends a press conference for the film 'Hail Caesar' at the 2016 Berlinale Film Festival in Berlin, Germany, Thursday, Feb. 11, 2016.
Amal Clooney and actor George Clooney attend Universal Pictures' "Hail, Caesar!" premiere at Regency Village Theatre on Feb. 1, 2016 in Westwood, California.
George Clooney smiles as he walks in the garden of the Cipriani hotel in Venice, Italy on Saturday, Sept. 27, 2014.
George Clooney and Amal Alamuddin cruise down Venice's Grand Canal in a taxi boat on Friday, Sept. 26, 2014, ahead of their weekend wedding.
George Clooney attends the BAFTA awards in Beverly Hills, Calif. on Nov. 9, 2013.
George Clooney arrives at the 84th Academy Awards Nominations Luncheon at The Beverly Hilton hotel in Beverly Hills, Calif., on Feb. 6, 2012.
George Clooney, winner of the Best Actor Award for "The Descendants," in the press room during the 17th Critics' Choice Movie Awards at The Hollywood Palladium in Los Angeles, on Jan. 12, 2012.
George Clooney attends "The Ides of March" premiere during the 55th BFI London Film Festival at Odeon West End in London, on Oct. 19, 2011.
Model Elisabetta Canalis and actor George Clooney arrive for the 82nd Academy Awards in Hollywood, on March 7, 2010.
George Clooney arrives at the 82nd Academy Awards in Hollywood, Calif., on March 7, 2010.
George Clooney and model Elisabetta Canalis attend the National Board of Review of Motion Pictures Awards gala at Cipriani 42nd Street in Manhattan, on Jan. 12, 2010.
From left, Elisabetta Canalis, George Clooney and Kerry Kennedy attend the Robert F. Kennedy Center for Justice & Human Rights Ripple of Hope awards dinner at Chelsea Piers in New York City, on Nov. 17, 2010.
Italian model Elisabetta Canalis and George Clooney attend the 2009 New York Film Critic's Circle Awards at Crimson in Manhattan, on Jan. 11, 2010.
George Clooney attends the 2009 New York Film Critic's Circle Awards at Crimson in Manhattan., on Jan. 11, 2010.
George Clooney at the Venice film festival, promoting his latest movie "The Men Who Stare at Goats," on Sept. 8, 2009.
Ewan McGregor and George Clooney during the photo call for "The Men Who Stare at Goats" at the Venice Film Festival, on Sept. 8, 2009.
George Clooney promotes his latest movie, "The Men Who Stare at Goats" at the Venice film festival, on Sept. 8, 2009.
Cast members Catherine Zeta-Jones, left, and George Clooney arrive for the premiere of "Ocean's Twelve," at the Grauman's Chinese Theatre in Hollywood, on Dec. 8, 2004.
George Clooney shows off his award for best leading actor in a comedy for his role in the film "O' Brother, Where Art Thou?," at the 58th Annual Golden Globe Awards in Beverly Hills, Calif., on Jan. 21, 2001.
George Clooney at the Venice Film Festival, on Sept. 9, 1998.
George Clooney during his time as an actor on "ER," on Jan. 17, 1996,