Nine years ago this week, Dove and Ogilvy Brazil rolled out one of the great megaviral ads of all time, "Real Beauty Sketches." Today on Tagline, we revisit the 2013 social experiment with the folks who made it—to learn how a film shot for less than $200,000 made a powerful statement about self-esteem, rejuvenated a legendary brand platform, drove $54 million worth of earned media, and rocketed around the world to become the most-watched online ad ever.