Angelina Jolie was spotted wearing a rock on the fourth finger of her left hand on Wednesday night.   Unlike Mley, Angelina's diamond means that she's officially engaged.  A rep for the jeweler confirmed the story, as did Brad Pitt's manager (to The Hollywood Reporter): 

A rep for the jeweler says, "I can confirm that, yes, Robert Procop did indeed design an engagement ring for Angelina Jolie, designed in collaboration with Brad Pitt."

On Friday afternoon, Pitt's manager, Cynthia Pett-Dante, told THR: "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. Brad designed the ring."

Brad had previously talked about waiting to get married, but it turns out that his kids have been asking about it a lot!  This is a quote from January of this year: 

“We’d actually like to,” he said of making Jolie his wife, “and it seems to mean more and more to our kids. We made this declaration some time ago that we weren’t going to do it till everyone can. But I don’t think we’ll be able to hold out. It means so much to my kids, and they ask a lot. And it means something to me, too, to make that kind of commitment.”

At the time, Pitt declined to comment on whether he had proposed yet. “I’m not going to go any further,” he said, “But to be in love with someone and be raising a family with someone and want to make that commitment and not be able to is ludicrous, just ludicrous.”

Congratulations to the happy couple and the entire Pitt-Jolie family!