The newly-engaged star Angelina Jolie sports her engagement ring as she exits the Roosevelt Hotel in West Hollywood.

Jewelry expert Michael O'Connor estimates the bauble to be worth $500,000, with a total weight of 16 carats with a center stone of 7 carats.

Angelina Jolie and Brad Pitt, one of the world's best known couples, are engaged to marry, ending a fevered, seven-year celebrity media dance over whether they will ever say "I do."

A spokeswoman for Pitt on Friday confirmed the pair had agreed to wed after Jolie was photographed in Los Angeles wearing a large diamond ring, designed by Pitt, on her engagement finger.

"Yes, it's confirmed. It is a promise for the future and their kids are very happy. There's no date set at this time," said Pitt's spokeswoman Cynthia Pett-Dante.

The 36-year-old actress Angelina Jolie held hands with her kids, Vivienne, Zahara and Pax as they strolled along the French Quarter in New Orleans.

Angelina Jolie and Brad Pitt's children Maddox, Shiloh and Zahara were spotted today taking their bulldog out for a walk in New Orleans.

Along with a nanny and a security team member, the three siblings took turns holding adorable Jacques' leash as they headed to Verdi Mart for some grub.

The 36-year-old actress Angelina Jolie wearing a pair of fitted black trousers and knee-high leather boots when going out and about in Beverly Hills with her 3-year-old twins, Knox and Vivienne, and Brad Pitt's mother.

The 36-year-old actress Angelina Jolie looking beautiful in a sensual high slit Atelier Versace strapless velvet black gown for the 84th Academy Awards in Los Angeles.

The 36-year-old actress Angelina Jolie looked lovely in a glittering gold dress at the premiere of her directorial debut In The Land Of Blood And Honey at the 62nd Berlin International Film Festival.

The 36-year-old actress Angelina Jolie looking beautiful in a black Jenny Packham gown at the 18th Annual SAG Awards in Los Angeles with Brad Pitt.

The 36-year-old actress Angelina Jolie looking beautiful in a white and red Atelier Versace gown for the 69th Annual Golden Globe Awards in Los Angeles.

The 36-year-old star Angelina Jolie attended the premiere of her directorial debut "In the Land of Blood and Honey" in New York City with her long-term partner Brad Pitt.