Steve Granitz/WireImage.com; Jeff Vespa/Getty Images for Art of Elysium;Jason Merritt/Getty ImagesHollywood blondes seemed to have stepped into a time machine over the weekend, creating a seriously retro vibe on the red carpet. From the 1940s era curls worn by Dianna Agron and ‘60s style bounce of January Jones at the Golden Globes to Nicole Richie's flapper-inspired hairstyle at the Art of Elysium gala, vintage certainly was the way to go. But we have to give a special shout out to the Mad Men star, whose looser locks seemed less costumey and more like a modern-day twist on a timeless classic.