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We all likely have a doppelgänger in the world somewhere. It's not just everyday people who are running into their look-alikes. Celebrities do, too.
Amy Adams and Isla Fisher get mistaken for each other all the time. Fans are convinced others share such a resemblance that they must have been separated at birth.
If you've ever felt like you're experiencing déjÀ vu, these 23 pairs of celebrities may be the reason you're seeing double.