George Clooney will be leaving his bachelor days behind him when he weds British beauty Amal Alamuddin as soon as this September.
According to reports, Clooney found it tough to choose between Brad Pitt and Matt Damon for the role of best man, but it seems that Matt has won the honour.
''A lot of people thought Brad was a certainty to be George's best man as they have been such good friends for years. But he is probably even closer to Matt”, a source told The Sun newspaper.
''Besides many years ago, during one drunken night together, George made a promise to Matt that he would make him his best man if he ever got married - so Matt called to claim his prize.''
The source added: ''Brad took the news with good grace - but he did say he'd heckle Matt during his speech.''
George and Matt have been best mates for years and have teamed up on the film set several times - shared movies include Ocean’s 11, 12 and 13, Syriana and The Monuments Men: