Paris Hilton and Nicole RichieDavid Letterman has offered to reconcile Paris Hilton and Nicole Richie to end their two year long feud.

The Simple Life stars are to appear on his show in September to publicly make up.

Neither Paris or Nicole have gone into detail on the nature of their argument but Paris has made various remarks about Nicole, including saying “she knows what she did” and accusing her of changing once she became famous.