Former American Idol Kellie Pickler has a new song called Best Days Of Your Life. Kellie sings this song with fellow singer Taylor Swift and having just had my first listen the song seems to be pretty good. I actually had the chance to watch Kellie perform live back when she was on Idol and she was one of my favorites from that year. This song might even make its way up to #1 on the billboard charts. Watch Kellie Pickler below rock out with Taylor Swift. Then let me know if you like the new song!