If you checked off Bo Bice's name in your American Idol office pool, it's time to pay up. In a bit of an upset, girl-next-door Carrie Underwood was crowned the winner of Idol Wednesday night, defeating Southern rocker (and fan favorite) Bice. As Idol's fourth champ, the 22-year-old Oklahoma native (and future country superstar) joins the ranks of previous winners Kelly Clarkson, Clay Aik..., er, I mean Ruben Studdard and Fantasia. "This is the best night of my life," Underwood told the Associated Press shortly after winning. "And it's going to get better." But first, it's gonna get a whole lot worse: Her first single, the cheese-drenched ballad Inside Your Heaven, drops June 14.