We all know there are plenty of celebrity kids that bear striking resemblance to their parents and actual sets of twins in Hollywood, but some of the best star "twins" aren't related at all. If you've ever done a double take while looking at Katy Perry and Zooey Deschanel, Jeffrey Dean Morgan and Javier Bardem, or Amy Adams and Isla Fisher, we've got the ultimate treat for you. Keep reading to see 22 of the most mind-boggling look-alike stars who could totally pass as siblings.
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