Even her most devoted fans might fail to make the connection. As a pregnant Olivia Wilde stepped out with brunette hair on Tuesday, she was featured as a red-lipped blonde in a new Revlon advert. While she is a brand ambassador for the make-up company, Olivia chose to go make-up free for her trip to the gym. Scroll down for video. Natural beauty! Actress Olivia Wilde, 29, went make-up free while emerging from the gym. City girl: Wilde explored the big city while in the Revlon commercial. As a result the fresh-faced 29-year-old looked rather different to her TV role on her Tuesday outing. With her mane pulled back into a care-free high pony tail, Wilde kept her eyes out of sight with a pair of cool aviator sunglasses.