Lindsay Lohan is set to re-enter prison this Friday

Lindsay Lohan is set to re-enter prison this Friday after a judge today issued a bench warrant and revoked her probation.The 'Mean Girls' star had failed two new drug tests during her bail term for a 2007 drink driving case, reported Los Angeles Times online.The warrant is on hold until 8:30 a.m. Friday, when Lohan is slated to go before Beverly Hills Superior Court Judge Eldon Fox .The actress