Demi Lovato Tweets about her "First Day Back to Working"

Almost two months after she got out of the Chicago-area rehab center, Timberland Knolls, Demi Lovato tweeted yesterday that she's excited to work again. 

"First day back to working. I can't wait to share with you guys what I'm doing today," she wrote on Twitter. "It's a big day for me. So excited! I love you all!!!"

So what exactly is Demi working on? No one knows really. Perhaps she agreed to sing with Timbaland? One thing's for sure, Demi hasn't yet retuned to her hit show, Sonny With A Chance. A rep for Disney says: "Demi's managegement will inform us when she is ready to return to work. As you know, last November, we announced that we would focus on our So Random sketch comedy show (the show within Sonny WIt A Chance) to keep the staff, cast and crew employed. We began production in January and will debut those episodes this spring."

Demi thanked her friend, Alexa Vega (Spy Kids) for supporting her on her first day back to work. "Wow what a very long but successful day today!! I'm SO blessed to have my friend @Alexavega with me ALL day for support!" Demi wrote, tweeting a photo of her and Alexa together. "Seriously so blessed for the friends in my life. Love them, AND love you guys too!!"