Lindsay Lohan checked out of Promises, the trendy Malibu Alcohol and Drug Rehab Treatment Facility, on Friday, after completing her six-week stay.

“On Friday, July 13, 2007, Lindsay Lohan successfully completed her 45 days of residential and extended care treatment at Promises,” said Lohan’s rep in a statement on Sunday. “She has transitioned to an intensive outpatient program, which includes attendance at daily AA meetings, outpatient therapy and daily testing.”

Though alcohol-free, Lohan isn’t planning to give up her partying ways any time soon. The 21-year-old Mean Girls star was spotted partying at Pure Night club in Las Vegas on Saturday, drinking sugar-free Red bull and Voss water, while staying far away from any liquor bottles.

“On her own, she has also made the decision in support of her sobriety to wear an alcohol monitoring bracelet,” adds Lohan’s rep. “In part she is wearing the bracelet so there are no questions about her sobriety if she chooses to go dancing or dining in a place where alcohol is served.”