Plot: Aly & AJ: Sister Act is an MTV television special featuring behind the scenes look of the lives of musicians/actresses Aly Michalka and her younger sister by two years, AJ Michalka, better known as Aly & AJ. The special premiered on August 18, 2007, as part of a My Super Sweet 16 marathon named "Aly & AJ's Super Sweet Playlist" hosted by the sisters, in which the sisters commented on their favorite episodes of the series