Lindsay Lohan insists she is taking her sobriety 'seriously' and has slammed reports she tried to celebrate her recent court appearance at a nightclub, claiming she stayed in and had sushi in her hotel.The 26-year-old troubled starlet - who accepted a last minute plea deal on Monday (18.03.13) that will see her undergo 90 days in a treatment facility, 30 days of community service and 18 months of psychotherapy stemming from a number of driving offences - has hit back at reports she celebrated escaping jail by going out partying and claims she simply ordered sushi in her hotel.Writing on her Twitter page on Tuesday (19.03.13), she assured her fans that she plans to follow every aspect of her sentence, including orders from the judge to stay away from drug dealers and places where they are likely to convene.She said: "Guys relax, that was NOT me at A/V or in the @mrpink SUV. I'm taking this seriously and focused on the road ahead."I stayed in last night, after a pretty long day...and ordered sushi to my hotel."Don't believe EVERY little thing you hear, unless you hear it from me. The support I have gotten, has been great and means alot. (sic)"Lindsay was previously said to have tried to toast her freedom at Hollywood's AV Nightclub soon after the hearing, arriving in the back of her billionaire friend Mr. Pink's car.'The Canyons' star tried to arrive at the venue unnoticed by covering her herself with a blanket but never got out of the car and ordered her driver to take her home after 15 minutes because the paparazzi were taking pictures of her.Lindsay pleaded "no contest" in relation to charges for lying to police about driving her Porsche when she hit a cement truck on the Pacific Coast Highway last June while still on probation for stealing a necklace.According to RadarOnline.com the actress has already agreed to a number of club appearances to promote the beverage Mr. Pink to pay back the company for letting her use their private jet to get to Los Angeles from New York for the court case.Lindsay's father, however, is furious that she celebrated avoiding jail by going out partying.Michael Lohan is shocked the 26-year-old actress - who was sentenced to 90 days in rehab after entering a last-minute "no contest" plea to driving offences in court yesterday (18.03.13) - went to Hollywood's AV Nightclub soon after the hearing, arriving in the back of her billionaire friend Mr. Pink's car.He told RadarOnline.com: "Are you kidding me? Just when you think things are getting better, the same people who were in court with Lindsay, and heard the judge instruct her not to be around people or places that drugs might be present, are the same ones out with her attempting to go into a club last night!"