Best Days of Your Life

"Best Days of Your Life" is a song performed by American country music artist Kellie Pickler. It was written by Pickler and American singer-songwriter Taylor Swift who also provides background vocals on the song. It was released on December 1, 2008, as the second single from Kellie Pickler's self-titled second album.^[1] The song is about a narrator explaining how her former boyfriend cheated on her and moved on to a new girlfriend to start a family with, wishing them well on their new life but says that the new girl won't top what they previously once had before.

The song received negative reviews from critics who panned the lyricism and melody for being nondescript. Despite this, "Best Days of Your Life" peaked at number nine on the Billboard Hot Country Songs chart, Pickler's highest charting country single to date. It also charted at number 46 on the Hot 100. The song was certified Platinum by the Recording Industry Association of America (RIAA), and has sold 1,133,000 units in the United States as of June 2010. The song also charted in Canada, peaking at number 99 on the Canadian Hot 100.

The accompanying music video for the song, directed by Roman White, features Pickler's ex-boyfriend having a miserable life with his new girlfriend and misses being with Pickler instead. Pickler debuted the song with a performance on November 12, 2008 at the 2008 CMA Awards. She also performed the song on American Idol, The Ellen DeGeneres Show, and the 2009 CMT Music Awards.