Demi Lovato, who released her new song "Skyscraper" just last week, is more than ready to get back into the spotlight.

While hitting up The Grove in LA to catch an 8:30 p.m. showing of Horrible Bosses, Ms. Lovato was all smiles wearing a black shirt from that read, "The Only Coke I Do Is Diet." Loves it!

Great to see that despite her recent rehab stint for an eating disorder, she still has a great sense of humor. Read what Demi Tweeted about her run-in with the paparazzi outside of the movie theater ... after the jump.