Paris Hilton and Nicole Richie are set to publicly end their two-year feud as guests on The Late Show with David Letterman.
Letterman has reportedly offered to play peacekeeper after inviting "The Simple Life" stars to appear together on his program in September.
The two fell out amid reports Richie aired a private viewing of Hilton's controversial sex tape. Both girls have refused to go into detail about their feud, with Hilton repeatedly telling journalists, "She knows what she did." Hilton and Richie agreed to team up on TV again for the third season of reality show The Simple Life - but refused to work together onscreen.