Things got emotional in Chicago on Saturday night when Demi Lovato took time mid-concert to thank some special guests.

Before performing her emotionally charged song “Skyscraper,” the 19-year-old songstress sent a message to audience members from her treatment center (Demi spent a number of weeks in 2010 getting treatment at the nearby Timberline Knolls facility). She opened up about the relationships she formed in rehab, and how her bonds with these girls have kept her motivated in the battle to overcome bulimia and anorexia.

The audience cheered loudly after the speech, and sang along with Lovato as she belted out the popular ballad -- Lovato touched fans again as she shed some tears during the performance. Watch her poignant performance below:

While Lovato’s road to recovery has been a public one, people continue to show their love and support for the star, whose personal troubles have been able to bring awareness to eating disorders.

On Sunday, she went back to Timberline Knolls, tweeting, "Today I went back to the treatment center I went to last year to speak to the beautiful women fighting their inner demons. I was so honored to be able to share my story and let them know that it gets easier. Life is beautiful. You are worthy of it."

"Please say a prayer for all of those struggling with eating disorders, self harm, mood disorders, and substance abuse," she added.

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