Big dreams come in all sizes, and Cookie Vonn isn't about to give up hers.

High school senior Cookie Vonn's post–graduation dreams include getting out of Phoenix, attending Parsons School of Design, and becoming the next great fashion designer. But in the world of fashion, being fat is a cardinal sin – and Cookie weighs in at over three hundred pounds. It doesn't help that she's constantly compared to her supermodel mother – and named after a dessert.

Thanks to her work for a Scottsdale fashion blog, Cookie scores a trip to New York to meet her design idols – where she hopes to personally pitch her plus–size portfolio and appeal for a scholarship to Parsons . Her plans are put on standby when she's declared too fat too fly. Forced to turn to her BFF, Tommy, for cash, Cookie buys a second seat on the plane only to arrive in the city to find the blog is under new ownership. Cookie has been replaced by the boss's daughter, a girl who's everything she's not – ultra thin and super rich. Hurt and humiliated, she vows to lose weight, get out of the friend zone with Tommy, and put her life on track.

Fast–forward two years. Cookie has dropped the weight – and won the attention of designer–of–the–moment, Gareth Miller. He offers her what she's always wanted – an opportunity to live and study in New York. Cookie expected nothing but sunshine and rainbows. But not only is she stuck with the same old problems, she has a big choice to make: achieve her old dreams...or dream new ones.