Lindsay Lohan has had new hair extensions in rehab.The 'Mean Girls' actress, who is currently being treated for drug and alcohol addiction at Utah's Cirque Lodge, was visited by staff from celebrity hairdresser Ken Paves' salon to ensure her locks look perfect when she leaves the facility. A source said: "Ken sent someone out to Utah to do Lindsay's extensions this week."Paves' celebrity clients include Jessica Simpson, Jessica Alba, Carmen Electra and Jennifer Lopez.Meanwhile, it has been claimed Lindsay did not agree to pose for an"exclusive rehab shoot" with America's OK! magazine. Friends of the actress insist the photographs were secretly taken and sold by someone in the Utah centre. One pal said: "Someone on the premises of the rehab took pictures of her and sold them. She didn't know about it. It was a violation."In one shot, Lindsay was seen reading Alcoholics Anonymous' 164-page 'Big Book' - the guide includes personal stories of beating alcoholism and also explains how the Alcoholics Anonymous program works.