What is the year of the event which occured first, Kellie Pickler's self title album was released, or The Best Days of Your Life was released?
Kellie Pickler (album): Kellie Pickler is the self-titled second studio album by American country artist Kellie Pickler. Kellie Pickler (album):  The album was released via BNA Records/19 Recordings on September 30, 2008.
i don't know