Demi Lovato Photographed Out of Treatment 3 Months After Apparent Overdose

Demi Lovato stepped out to dinner on Saturday night in Beverly Hills, California, looking healthy.

Demi Lovato stepped out to dinner on Saturday night in Beverly Hills, California, looking healthy three months after she suffered an apparent overdose.

The 26-year-old singer ate dinner at Matsuhisa restaurant with designer Henry Levy, in photos published by TMZ. According to the outlet, the duo was happy and laughing throughout their meal. 

ET has also learned that the singer enjoyed a night out at Halloween Horror Nights at Universal Studios Hollywood in Los Angeles on Friday, Nov. 2.

“She walked right in the normal entrance," an eyewitness tells ET. "She had a male with her and about four to five security personnel with her. She had her chin up and was smiling and waving to anyone who had seen her. She didn’t attract a crowd.”

“She looked healthy," the eyewitness adds.

A second eyewitness who also saw Lovato at Halloween Horror Nights tells ET, “Overall she seemed very happy and comfortable. She just seemed very focused on going to [the] attractions. She wasn't really approached either from what I saw. Everyone just kinda let her be.”

ET has reached out to Lovato's rep.

A source recently told ET that the former Disney star has been sober for more than three months after her apparent overdose on July 24, and that she plans to remain in treatment for the remainder of the year. 

"Demi is taking her sobriety extremely serious, and knows she has a long road ahead of her," the source said. "At the end of the day, Demi is doing this for herself. She has to stay sober for her, but every time she has family or friends visit her it reminds her of all the other important people in her life that she needs to fight for as well."

"Demi is thankful she's still alive and is doing whatever she can to never get to that point again," the source added.

Lovato was released from Cedars-Sinai Medical Center and entered treatment in August. ET learned that she also later flew to Chicago to further her treatment in another facility for several days, where she worked with a specialist who focuses on mental health and sobriety.

In September, a source told ET that she was enjoying visits from her mother, Dianna De La Garza, as well as from her ex-boyfriend, Wilmer Valderrama, while in treatment.

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-- Reporting by Brendon Geoffrion