It's been said that everyone has a doppelgänger, but some don't meet them until later in life, like these celebrities. As stars like Brad Pitt, Cameron Diaz, and Leonardo DiCaprio age, they start to look like older actors like Robert Redford, Ellen Barkin, and Jack Nicolson. We bet you probably didn't even notice!
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Click through the gallery to see celebs who are slowly transforming into other stars.
Brad has always been the Robert of our generation, but as he gets older, he's starting to look more and more like the iconic star.