Cast member Angelina Jolie and actor Brad Pitt attend the premiere of the movie "Salt" at the Grauman's Chinese theatre in Hollywood, California July 19, 2010. The movie opens in the U.S. on July 23. REUTERS/Mario Anzuoni

Hollywood star Brad Pitt carries adopted son Maddox as Angelina Jolie carries adopted daughter Zahara during their stroll outside their hotel in Mumbai November 12, 2006. REUTERS/Prashanth Vishwanathan

Actors Brad Pitt and Angelina Jolie arrive for a special Maleficent Costume Display at Kensington Palace in London May 8, 2014. "Maleficent" is the upcoming Disney film starring Jolie and Kensington Palace is the official residence of Prince William and Catherine, Duchess of Cambridge. REUTERS/Luke MacGregor

Director and cast member Angelina Jolie and her husband and co-star Brad Pitt pose at the premiere of "By the Sea" during the opening night of AFI FEST 2015 in Hollywood, California November 5, 2015. The movie opens in the U.S. on November 13. REUTERS/Mario Anzuoni

Cast member Angelina Jolie and actor Brad Pitt arrive for the screening of the film "The Exchange" by U.S. director Clint Eastwood at the 61st Cannes Film Festival May 20, 2008. REUTERS/Vincent Kessler

Hollywood actors Brad Pitt (R) and actress Angelina Jolie (2nd L) arrive with their children Knox (2nd R), Vivienne (3rd L) and Pax (L) at Haneda international airport in Tokyo July 28, 2013. Pitt flew into Japan on Sunday with Jolie and his children to attend promotional events of his movie "World War Z". REUTERS/Issei Kato

Hollywood actor Brad Pitt and his partner Angelina Jolie pose at the Japan premiere of his movie "World War Z" in Tokyo July 29, 2013. The movie will be screened in Japan on August 10, 2013. REUTERS/Yuya Shino

Actors Brad Pitt and Angelina Jolie depart at the end of the 18th annual Screen Actors Guild Awards in Los Angeles, California January 29, 2012. REUTERS/Lucy Nicholson

Cast member Angelina Jolie waves at fans with actor Brad Pitt as they arrive at the premiere of "Maleficent" at El Capitan theatre in Hollywood, California May 28, 2014. The movie opens in the U.S. on May 30. REUTERS/Mario Anzuoni

Angelina Jolie and partner Brad Pitt and son Maddox arrive at the 5th Annual Academy of Motion Picture Arts and Sciences Governors Awards in Hollywood November 16, 2013. Jolie is being honored with the Jean Hersholt Humanitarian Award, which is an Oscar statuette at the ceremony. REUTERS/Fred Prouser

Cast member Brad Pitt and actress Angelina Jolie arrive on the red carpet for the screening of the film "The Tree of Life", by director Terrence Malick, in competition at the 64th Cannes Film Festival, May 16, 2011. REUTERS/Vincent Kessler

Angelina Jolie and Brad Pitt attend the "Cinema for Peace 2012" charity gala during the 62nd Berlinale film festival in Berlin February 13, 2012. REUTERS/Andreas Rentz/Pool

Actress and Special Envoy of the United Nations High Commissioner for Refugees, Angelina Jolie (R), and her partner actor Brad Pitt, look at photographs of victims of violence at the 'End Sexual Violence in Conflict' summit in London June 12, 2014. REUTERS/Lefteris Pitarakis/Pool

Actress Angelina Jolie kisses her partner, actor Brad Pitt, as she is announced recipient of the Jean Hersholt Humanitarian Award at the 5th Annual Academy of Motion Picture Arts and Sciences Governors Awards at The Ray Dolby Ballroom in Hollywood, California November 16, 2013. REUTERS/Mario Anzuoni

U.S. actors Brad Pitt and Angelina Jolie leave a restaurant with their children in Venice February 16, 2010. REUTERS/Michele Crosera

Cast member Angelina Jolie waves at fans with actor Brad Pitt as they arrive at the premiere of "Maleficent" at El Capitan theatre in Hollywood, California May 28, 2014. The movie opens in the U.S. on May 30. REUTERS/Mario Anzuoni

Cast member Brad Pitt and his fiance Angelina Jolie arrive for the premiere of the film World War Z in Berlin June 4, 2013. The movie opens in German cinemas on June 27. REUTERS/Tobias Schwarz

Actors Brad Pitt (R) and Angelina Jolie are seen on the set of Jolie's yet untitled directorial debut in Budapest November 8, 2010. Jolie is directing her first feature film about a Serbian man and Bosnian woman who meet on the eve of the 1992-95 Bosnian war. REUTERS/Laszlo Balogh

U.S. actor Brad Pitt (L) and his partner Angelina Jolie arrive at the Japan premiere of Pitt's film "Moneyball" in Tokyo November 9, 2011. REUTERS/Toru Hanai

An aerial view of the 17th-century Chateau Miraval, the $60 million estate which is owned by actors Brad Pitt and Angelina Jolie, is seen in the village of Correns, southern France, August 10, 2012. Rumours of a weekend wedding between Brad Pitt and Angelina Jolie have been denied by a local newspaper and local officials said they had no knowledge of any impending nuptials. Since Pitt and Jolie announced their engagement earlier this year, there have been rumours that they could tied the knot this summer at their estate. REUTERS/Philippe Laurenson

Actors Brad Pitt and Angelina Jolie arrive at the British Academy of Film and Arts (BAFTA) awards ceremony at the Royal Opera House in London February 16, 2014. REUTERS/Suzanne Plunkett