Don't fret, you're definitely seeing double!
It's easy to think you know everything about A-list stars like Ashton Kutcher and Scarlett Johansson — but in reality, most people have no idea these two are twins!
MORE: Gisele Bündchen Shares a Throwback Photo With Her Twin Sister — See the Pic!
Click through the gallery below to see more celebs you didn’t know had twin siblings!
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