Demi performed at Z100's Jingle Ball 2011 Official Kick Off Party in New York City on Friday where it was also announced she would perform at the annual concert along with Lady Gaga, Kelly Clarkson, LMFAO, Pitbull, Foster the People, Gym Class Heroes, David Guetta, and Hot Chelle Rae.
In addition, Demi will be singing the National Anthem at Game 5 of the World Series on Monday. According to her, she owes it all to the fans. Demi tweeted, "Only my lovatics could land me a spot singing the national anthem at the WORLD SERIES!!!! I couldn't do it without you guys!!!!"
Zooey Deschanel will also be singing the National Anthem at Game 4 of the World Series tomorrow night on Fox.
To find out when Demi is coming to a city near you, visit demilovato.com.