The couple confirmed their engagement in a statement Friday.
"Yes, it's confirmed," Pitt's manager Cynthia Pett-Dante told People magazine. "It is a promise for the future and their kids are very happy.
The date for the "BraAngelina" Wedding is not yet fixed.
Jeweler Robert Procop designed Jolie's engagement ring in collaboration with Pitt.
"I can confirm that, yes, Robert Procop did indeed design an engagement ring for Angelina Jolie, designed in collaboration with Brad Pitt," said Robert's spokesman.
"Brad had a specific vision for this ring, which he realised over a yearlong collaboration. He wanted every aspect of it to be perfect, so I was able to locate a diamond of the finest quality and cut it to an exact custom size and shape to suite Angelina's hand. Brad was always heavily involved, overseeing every aspect of the creative design evolution. The side diamonds are specially cut to encircle her finger. Each diamond is of the highest gem quality."
Brad was previously married to Jennifer Aniston while Angelina has been wed twice before, to Johnny Lee Miller and Billy Bob Thornton.
The two of them look good together. They'll be blessed for they are kind.