“Celebrity Lookalikes: 40+ Doppelgangers That Will Leave You Astonished”

Whether you see them in black and white or color, comedian Dane Cook and "Pitch Perfect" star Skylar Astin look almost identical.

A few years ago, Skylar Astin posted a picture of himself and Dane Cook on his Twitter account. He jokingly captioned it, "We don't see it," suggesting that they don't think they look alike, even though they do.

How much do these two resemble each other? They have blonde hair, heart-shaped faces, big smiles, and they really seem like they could be sisters who got separated. Plus, their last names are similar too!

In recent times, de Rossi has a short pixie haircut, so she doesn't look exactly like de Mateo anymore, but they still have very similar facial features.

SNL comedian John Mulaney is frequently confused with Grant Gustin, the actor who plays The Flash. It's easy to see why, as they both have youthful and handsome appearances.

On Late Night with Seth Meyers, John Mulaney talked about how he often gets mixed up with Grant Gustin. He mentioned that when he complained to his wife about it, she jokingly told him to be grateful because he's being compared to a good-looking 28-year-old actor (while Mulaney is 10 years older).

These former E! Channel stars are one of the most famous look-alike pairs on TV, and they often make jokes about it themselves.

Even McHale's own son notices how much they look alike. McHale shared, "When my son would see Ryan Seacrest on TV, my wife would ask, 'Hey Eddie, who's on the TV right now?' And he'd say, 'Daddy.' Ryan is a good-looking guy, so I take it as a nice compliment. Even though Ryan is shorter, around 4'11", I still appreciate it."