Happy 30th birthday, Alexa Chung! The British model-turned-fashion trendsetter has a lot to celebrate. Ever the multi-tasker, the DJ, designer, and TV host can now add a few more accomplishments to her résumé, including author. What does the style maven currently have in the works? A collaboration with cosmetics brand Eyeko, out November 14th on eyeko.com and in Sephora come January, and her recently released book It — a collection of Alexa’s personal writings, drawings, and photographs, that includes everything from her candid thoughts on life, love, and music to her favorite ensembles and how to decide what to wear in the morning — which you can pick up here. With nearly 1.2 million Twitter followers and an iconic Mulberry bag named after her, this "it" girl certainly keeps herself busy. To celebrate Alexa's birthday, we’re taking a look back at her most notable hair and makeup choices. Check out her transformation in our gallery!