Feuding socialites Paris Hilton and Nicole Richie are filming hit reality show The Simple Life again - together. The pair had a public falling out last year (05) and Hilton attempted to scrub Richie's name from the show and replace her with Rod Stewart's daughter Kimberly. But TV bosses decided that idea didn't work - and a deal is a deal. So they brought the battling princesses back together for a fourth series of the show, which began shooting on Monday (27FEB06). But, according to show insiders, producers are keen to keep the couple apart and have assigned them different projects. Both girls will play wife to a number of eclectic families across Los Angeles and the families will then choose which socialite did a better job.