Tina Brown made her name as the legendary editor of Vanity Fair. Now, she's the Founder and CEO of Tina Brown Live Media, which puts on the annual Women in the World Summit. She's also the author of the recently released book "The Vanity Fair Diaries." This week, Tina talks to us about imposter syndrome, working with Harvey Weinstein, and her fascination with Ivanka Trump. It's a must-listen.