Back in Los Angeles with her sandbox pal, Richie and Hilton quickly became staples in Hollywood's V.I.P. nightlife scene. Growing up Richie (and Hilton) had its perks, and the two girls were soon invading countless red carpets and partying in the hottest clubs together in Los Angeles. It wasn't long before Richie's struggles with drugs and alcohol surfaced. In 2003, the hard-partying starlet, who has admitted to experimenting with drugs as a young teen, was convicted of driving under the influence of alochol. The same year she checked into Arizona's Sierra Tucson drug rehab center after being arrested for heroin possession and driving with a revoked license.