Celebrity Transformations Happy Birthday, Olivia Wilde! By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Published on March 10, 2012 @ 09:00AM Pin Share Tweet Email Photo: Byron Purvis/AdMedia/Retna; SGranitz/WireImage Today is Olivia Wilde’s 28th birthday! To celebrate her big day, we're taking a look at her beauty transformation, from fresh-faced blond to a red carpet head-turner. See Olivia's best looks through the years in the gallery. MORE:• Try on Olivia's Latest Hairstyle• Get Olivia's Pretty Pink Lips• See Photos From Olivia's Revlon Shoot