Nikki Reed
Credit: Johns PkI/Splash News; Taylor Hill/FilmMagic

Break out the birthday cake—Nikki Reed turns 24 today! To help the Twilight Saga actress celebrate, we're taking a look back at her best red carpet looks ever, including a highlighter Jenni Kayne shirtdress and a scarlet, one-shoulder Versace mini. Click through the gallery to see more of Nikki's most memorable style moments.