Paris Hilton will lose weight, gain "street cred' and look more beautiful after she goes to prison, her friends claim.Pals of the hotel heiress - who has been sentenced to 23 days in jail for driving with a suspended licence - believe Paris' imprisonment will be good for her. Fashion designer Alvin Valley, a good friend of the socialite, said: "Prison will be the best thing that ever happened to Paris Hilton." Another pal said: "It's going to make her more famous than ever. In jail, she's going to get enviably skinny, and without any make-up or products her hair and skin will finally be able to breathe, so they'll look amazing, too. Plus she's going to get all that street cred." However, not everybody believes Paris' prison term will be beneficial to her.Writer David Patrick Columbia - a close friend of the Hilton family - is worried her incarceration will ruin the 26-year-old star's career. He told Style magazine: "Drunk-driving is a serious crime. People die from it. Jail is a whole other ball game from the soap opera we've enjoyed watching up until now. I think we could be witnessing the end of Paris Hilton."