Former best friends and stars of ‘The Simple Life’ Paris Hilton and Nicole Richie are reportedly about to end their two year old feud on live TV.

The TV stars and budding pop stars are to appear together on the David Letterman show in September.

Letterman is hoping to play peace maker as he reunites the estranged friends.

Although neither girl had stated publicly why they fell out, rumour has it that Richie played a copy of Paris Hilton’s home made porno at a party; Richie has denied this.

She instead claims that on leaving rehab she did not want to associate with her old circle of friends.

Whatever the caase of the break up, the make up is going to be watched by millions