Brad Pitt and Angelina Jolie announce engagement

Hollywood A-listers Angelina Jolie, 36, and Brad Pitt, 48, are engaged to be married, a spokesperson has confirmed. Wedding date has not yet been set, she added, describing the engagement as "a promise for the future".

The couple, who are between Hollywood's most extensively recognized celebrities, have been together since 2005. They have six children jointly, containing three adopted children. They are "very happy" about the news.

Jolie, the daughter of actor Jon Voight and actress Marcheline Bertrand, has begun in blockbuster films such as Mr & Mrs Smith, where she met Pitt. She got an Oscar for her performance in the 1999 film Girl, intermittent.

She was formerly married to actors Jonny Lee Miller and Billy Bob Thornton. Meanwhile, Pitt has starred in a cord of hit films including blockbusters Ocean's Eleven, Seven and, more recently, the seriously highly praised Moneyball and Tree of Life.

Earlier, Pitt had high-profile relationships with actresses Gwyneth Paltrow and Jennifer Anniston, to whom he was married.As a couple Pitt and Jolie have championed caring causes.

In 2001 she became a goodwill ambassador for the United Nations High Commissioner for Refugees (UNHCR). She has also recognized a number of charitable organizations, among them the Jolie-Pitt Foundation.

Angelina Jolie

Sometimes it's too hard to remember that before Angelina Jolie became a mother of six and one of Hollywood's highest-profile humanitarians, she was facing difficulties upstart living her life on the edge.

But Jolie has not forgotten, and she's telling "60 Minutes" that she's fortunate to have made it out of her adolescence alive.

"I went through heavy, difficult times and I survived them," the 36-year-old Academy Award-winner said in an interview that airs this Sunday. She is lucky because she did not die in her youth. There are other artists and people who didn't survive certain things."

When pressed on the subject, Jolie held back but said something sure to let curious imaginations run wild.

"[There's] nothing she desire to go into depth about, but people can imagine I did the most dangerous and the worst. There are many reasons, I shouldn't be here. You just think [of] those times when you came too close to too many dangerous things, too many chances taken, [going] too far."

Before she settled down with Brad Pitt in 2005, Jolie had a reputation for dark behavior that her eccentric personality hardly refuted. The daughter of "Midnight Cowboy" actor Jon Voight, Jolie survived a troubled adolescence, to say the least: Before becoming a star in her own right, she often cut herself and admitted to experimenting with "just about every drug possible including heroin.

Having cleaned up a bit as she started her twenties, Jolie still continued to increase eyebrows, whether it was wearing a vial of blood from her then-husband Billy Bob Thornton around her neck, kissing her brother on the lips in public, or talking about her briefly considered dream job of being a mortician.

Even now, as the mother of six, Jolie says she hasn't full abandoned her darker urges. "I'm still a bad girl, I still have that side of me… it's just in its place now," she said. "It relatess to Brad."