Kelly Clarkson
Sure, we’re kind of stretching it with this one. Kelly Clarkson did appear in the first season of “American Idol” and won it. Since then she has been singing and crushing it, but we decided to keep her on the list because she’s come a long way from winning Idol. In fact, a lot of winners don’t really go anywhere (coughRUBENSTUDARDcough), so keep killing it, Kelly!