It's nearing the end of her stay in Celebrity Rehab, and on last night's episode, Jessica Sierra showed an increasing amount of anxiety about going back into the real world. Sierra, a former American Idol contestant, has had the most public relapse since leaving Celebrity Rehab: In December 2007 she was arrested for disorderly intoxication, and held without bond for 39 days. From her Wikipedia: "The police report of the bar incident states that she shouted obscenities and slurs at the authorities also offering a sexual deed if they would release her. According to the report, Sierra said 'Fuck you, nigger' several times to one of the officers.The officer was white." In January, she was sentenced to one year in a California facility, where she is currently residing.