Editor’s Note: A new episode of “The Whole Story: K-Pop: A Star is Made,” following a group of teen girls’ journey to becoming idols and much more airs Sunday, January 5th at 8pm ET on CNN. Seoul, South Korea CNN  —  Seven girls sit in a room, waiting for their name to be called. All of them are young, slim and gorgeous, ranging in age from 14 to 20, with glossy hair and flawless skin. Anticipation hangs in the air, and nerves are written plain on their faces. They’re about to find out which