US gossips are planning for Angelina Jolie and Brad Pitt's wedding, after a jeweller revealed he's designing a special gem for the couple.

ALBERTO REPOSSI, who designed late British royal DIANA, Princess Of Wales' engagement ring, has confessed Pitt has commissioned him to craft something special.

He tells America's In Touch magazine, "We've received an assignment on behalf of Mr Pitt for a very special jewel.

"You must understand that I cannot give you more details."