@sarahhyland / @aplusk

15 Pairs Of Actors Who Look So Much Alike

They say that everyone has a long-lost doppelganger somewhere that's just waiting to be found. but when you're an A-list celebrity in Hollywood, the search isn't nearly as expansive or lengthy.

Below are 15 pairs of actors and celebs who look so much like one another you'd swear they were the same person. Or at the very least, long-lost twins separated at birth.

Nathan Fillion and Jeremy Renner

@nathanfillion / @jeremyrenner

If Nathan Fillion was 10 years younger, he would've been the perfect cast for Hawkeye in The Avengers. in a similar vein, if Renner was 10 years older, he would've made a pretty hunky Richard Castle.

Zach Braff and Dax Shepard

@zachbraff / @daxshepard

First of all, I'm in love with Zach's pajamas and I desperately want a pair of my own.

both he and Dax have very similar facial features, especially when you look at their eyes and nose.

Gerard Butler and Clive Owen

@gerardbutler / Altitude Film Distribution

If you had Clive Owen grow a thick and full beard, I imagine that you'd be hard-pressed to tell who was who. I don't know what's more of a compliment: to say that you look like Gerard Butler or Clive Owen?

Mark Wahlberg and Matt Damon

@markwahlberg / Focus Features

If I'm being honest, I personally don't see the resemblance but according to both Matt and mark — fans mistake one for the other all the time. I suppose with facial hair, I can kinda see what people are referencing.

Will Ferrell and Chad Smith

There have been plenty of momentous and incredible things that take place on late-night TV. But Will Ferrell and Chad Smith's (of The Red Hot Chili Peppers) epic drum battle is easily a top 10 greatest moments of all time.

Margot Robbie and Jaime Pressly

@jaimepressly / Lionsgate

Jaime Pressly looks like she could be Margot Robbie's sister — and I'm really digging the short hair, too. I for one would love to see Jaime one day join the DCU as Neo Joker.

Amy Adams and Isla Fisher

20th Century Studios / @islafisher

Amy and Isla are two of the most gorgeous redheads in all of Hollywood. I for one can't wait to see Amy in her latest film The Woman in the Window — it looks scary as hell!

Jeff Bridges and Kurt Russell

@thejeffbridges / @goldiehawn

Jeff Bridges and Kurt Russell are two cool cowboys, there's no denying that. These silver foxes look like backing musicians for The Allman Brothers Band.

If you don't understand the reference, then congratulations — you're young.

Katy Perry and Zooey Deschanel

@katyperry / @zooeydeschanel

In a totally healthy and completely non-stalker kind of way — I am totally obsessed with Katy Perry and Zooey Deschanel. I love Katy's new blonde look but I long for the day when she returns to her natural black.

Jessica Chastain and Bryce Dallas Howard

@jessicachastain / @brycedhoward

It's not just the red hair that makes it difficult to tell Bryce and Jessica apart from one another. These two actresses are renowned for their powerful performances and for portraying strong female characters.

Liam Neeson and Ralph Fiennes

Open Road Films / United Artists Releasing

Ralph Fiennes is someone who doesn't get nearly the amount of respect that he deserves. For my money, there isn't a better villain in all of Hollywood — much like how there isn't another badass quite like Liam Neeson.

Natalie Portman and Keira Knightley

Paramount Pictures / Bleecker Street

Natalie and Keira both look as if they're from another time. Almost as if they stumbled into a time machine in the late 1700s and were instantly transported to the 21st century. It's kind of creepy when you think about it.

Zoe Saldana and Thandie Newton

Disney / @zoesaldana

I was watching RockNRolla the other day and I had to do a double-take because I was certain that I was watching Zoe Saldana.

Speaking of, when are we ever going to get the sequel, Guy Ritchie?

Javier Bardem and Jeffrey Dean Morgan

@bardemantarctic / @jeffreydeanmorgan

I love Jeffrey Dean Morgan, let me say that first and foremost. I don't believe there's another actor out there who could fill his shoes. But oh what I wouldn't have given to see Javier swing Lucille.

Sarah Hyland and Mila Kunis

@sarahhyland / @aplusk

I've been a fan of Sarah Hyland's since she first stormed onto the scene in Modern Family. She and Mila are almost indistinguishable from one another, especially when you compare these two photos — it's uncanny.