"Fifteen" is the fourth single from the second studio album which was released on what date??
Fifteen (song):  "Fifteen" was released on August 30, 2009 by Big Machine Records, as the fourth single from Swift's second studio album, "Fearless" (2008). Fearless (Taylor Swift album): Fearless is the second studio album by the American singer-songwriter Taylor Swift. Fearless (Taylor Swift album):  The album was released on November 11, 2008, by Big Machine Records.
i don't know