Have you ever noticed how much Joseph Gordon-Levitt looks like Heath Ledger? How about Mischa Barton and Elijah Wood?
Believe it or not, they have VERY similar faces . . . which you wouldn't necessarily realize until you've seen half of each of their faces put together to create a single face. Thankfully, the work has been done for us.
Other celebrities who look a lot more alike than you'd think include Carrie Underwood and Emily Osment . . . Ariana Grande and Alyssa Milano . . . Katy Perry and Zooey Deschanel . . . and Rob Lowe and Ian Somerhalder.
One of the most surprising . . . and possibly the creepiest . . . is the one with the faces of Christopher Walken and a young Scarlett Johansson.
Check out all these and more here.