While we're always loyal to our veteran fashion girls — Diane Kruger, Mary-Kate and Ashley Olsen, and Alexa Chung, to name a few — 2012 brought a whole new exciting crop of style stars whose fashion sense we just couldn't get enough of. British model Poppy Delevingne perfected the marriage between sophisticated and youthful dressing (and she always makes the demure hemline look so damn cool). Speaking of perfecting things, Solange Knowles is a pro at mixing prints and she did it ever so fabulously time after time this year. Nina Dobrev wasn't afraid to take risks on the red carpet — so she always stood out from the pack — plus, have you seen those mile-long legs? Ashley Madekwe was another star that made her mark in fashion this year. Not only does she have her own personal style blog, but she makes both day and night dressing look equally and insanely effortless. And finally, Allison Williams captured our attention with her bold dress choices, and her megawatt smile — not to mention her breakout role on our new TV obsession Girls. Now that you know a little bit about the fabulous nominees for breakout star of the year, it's time to cast your vote below.