By Meghan Blalock
Updated Sep 16, 2012 @ 2:00 pm
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Abbot Genser/HBO

Fans of HBO's favorite gangster showare rejoicing right now, Atlantic City style! Or perhaps you've had your Boardwalk Empire party planned for months (1920s costuming and all). Tonight's the night: Nucky, Margaret, and Agent Melson Van Alden return at 9 pm EST for season 3, bringing you all the gritty New Jersey drama you can handle. And if you're not a fan of the show, the outfits alone are reason to tune-in: the series' lead costume designer, John Dunn, has also created some of the amazing period looks we've seen on Mad Men. Will you be watching?

Plus, see some of the greatest looks from Mad Men!