Hilton & Richie to Publicly Make Up on Letterman Show

Paris Hilton and Nicole Richie are set to publicly end their two-year-old feud as guests of chat show king David Letterman.

The beloved TV host has offered to play peacekeeper after inviting "The Simple Life" stars to appear together on his "The Late Show" program in September.

The two former pals 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 bust-up, with Hilton repeatedly telling journalists, "She knows what she did."