It seems that actress Lindsay Lohan is taking her current rehab stint pretty 'serious' and doesn't want to 'mess around' this time.
A friend of the 'Mean Girls' star said that the actress will be in the rehab for more than a month, and that there is no clear time frame for her stay due to her work schedule.
"She is staying in Promises for longer than a month. We don't know how much longer because of her work schedule, but she is taking rehab very seriously this time and not messing around," the New York Post quoted the friend, as saying.
The young starlet, who checked into Promises rehab following her arrest in a DUI case, has also cancelled her 21st birthday bash at Las Vegas nightclub PURE.
The nightclub also confirmed that cancellation and added that they support the actress' decision.
"We support Lindsay and wish her the best as she is taking care of personal matters at this time," the club said in a statement.