Kathy Griffin recalls Republican at party mistaking Rosie O’Donnell for Roseanne Barr

Kathy Griffin recalls Republican at party mistaking Rosie O’Donnell for Roseanne Barr

There was a strange mix-up at Paris Hilton's house. Not everybody can keep their celebrities straight, especially the ones of similar ages with similar-sounding names. But ideally, you don't make such a mistake to a famous person's face.And yet, Kathy Griffin told Jimmy Kimmel this week about a recent party at Paris Hilton's house, where she witnessed another guest mistake her friend Rosie O’Donnell for a very different comedian."So this guy com…