Demi Lovato will perform the national anthem at Game 5 of the World Series. Lovato will belt out the anthem on Monday. The Texas Rangers and the St. Louis Cardinals are tied 1-1 in the seven-game series. Lovato got a boost from her big sister Dallas, who tweeted during Game 1 that her younger sister should sing the national anthem during the Major League Baseball championship series. Game 3 airs Saturday and all games are being broadcast on Fox. Lovato, the former star of the Disney Channel's Sonny With a Chance, released her third album Unbroken last month.
