Claws are out between Hilton and Ritchie

Things are getting cattier by the day between Paris Hilton and ex-pal Nicole Ritchie, who has been spotted out and about with Hilton's sister, Nicky.

Childhood friends Paris and Nicole were so tigh that they even had their own US TV show together, but after an acrimonious falling-out the Fox network has announced that it's looking for a replacement for Ritchie in reality TV hit The Simple Life. According to the rumour mill, Nicole was jealous of all the media attention Paris was receiving...