Selma Blair is getting candid about her health journey in her new documentary, ‘Introducing, Selma Blair.’ The actress was diagnosed with multiple sclerosis in 2018 and is now sharing her story with the world.Blair held the premiere of her documentary in The Hamptons on Saturday at the Sag Harbor Cinema, according to the Daily Mail. While walking the red carpet, the 49-year-old looked stunning in a white Rodarte dress that had red roses on it and a black trimmed neckline and sleeves.