Demi Lovato's 19th Birthday Shopping Session

She's officially 19-years-old, and Demi Lovato stepped out for a midday excursion in Los Angeles, California on her birthday (August 20).

Sporting a cute Mickey and Minnie Mouse shirt, the "Skyscraper" singer was joined by a gal pal as the ladies popped into a local CVS pharmacy to pick up a few needs.

The sighting comes after Miss Lovato rang in her 19th birthday the previous night with a fun-filled visit to Pinz Lanes.

Meanwhile, Demi is among the many stars who are set to head to Montecito this evening to attend the much-talked-about wedding of Kim Kardashian and Kris Humphries.

Enjoy the pictures of Demi Lovato and a friend stopping by a CVS pharmacy (August 20).