Do you remember back in 2009 when Susan Boyle blew the lid off “Britain’s Got Talent”? She sang “I Dreamed a Dream” and the judges jaws dropped. Well, last night on “America’s Got Talent,” a painfully awkward 13-year-old girl named Courtney Hadwin did something similar. She surprised the hell out of everyone who was watching. Even if you don’t appreciate her style, you’ll be stunned by the transformation.