Warner Bros.
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It's always interesting when actors play a character in their younger years. Some movies strive to create the perfect match while others seem to care less. They'd rather nail the personality than get the look right. Either way, it's something seen in movies every year. 

In recent years we've seen movies digitally recreate younger versions of older actors. Princess Leia was reborn as a 25-year-old in Rogue One, and we've seen other characters get the same treatment in other Star Wars films.

And who can forget The Curious Case of Benjamin Button? The entire movie, about a man who ages in reverse, might've taken up this whole slideshow if it weren't for computers. Perhaps the future is all CGI.

For now, however, we can still remember plenty of young/old character combinations from movies we love. Here's a look at some of the best (and worst) through the years. See how the actors compare. They're supposed to be the same person after all.