Kellie Pickler will return to the AMERICAN IDOL stage, to perform her hit single, “Best Days of Your Life,” which she co-wrote with pal Taylor Swift, on the results show Wednesday, April 8 (9:00-10:00 PM ET live/PT tape-delayed) on FOX. On her return to American Idol Kellie said, “Going back to American Idol is like going to a family reunion, well, it’s more fun than ... MORE