[SPOILERS] Katherine vs. Elena: The Showdown

It's been a long time coming, and now that Elena is a vampire, and back together with Stefan, it's time to see her and Katherine really face off. These women are two sides of the same coin, and only one can be on top. Season 3 was pretty light on the doppelganger scenes, and though we know they're complicated to film for Miss Dobrev, they're a delight to watch.