There's a saying in Hollywood. If you can't get the actor you want, get someone who looks like them. As is the case, there are a lot of celebrity look-alikes in Hollywood. Here's a look of a few of these twinswithout blood ties.

Evangeline Lilly and Lena Headey

Evangeline Lilly gained her fame TV and then moved to film while Lena Headey did the exact opposite.These two ladies both have striking cheekbones and dark hair, which is their signature look even though both have played with their hairstyles. However, long or short hair the ladies really do resemble each other.

Lilly is less familiar to people who aren't fans ofthe ABC drama LOST. She played Kate, the hard nosed escapee criminal who was forever forming love triangles and being indecisive in her relationships. After the show ended after six seasons, Lilly moved on to film. She's had roles in The Hobbit triology and more recently as Hope Van Dyne in Ant-Man.

Headey plays the conniving, brother-lovingCersei Lannister on Game of Thrones.She first became noticeable playing the queen in 300 and then later was featured in the first Purge film.So versatility-wise, she can play pretty much any role, but her niche roles are period pieces and she always plays the strong woman with power.

Maybe that's why she and Lilly, attract the same roles.

Katy Perry and Zooey Deschanel

Ok, this is nothing new. If you are a fan of pop music with a taste for indie films, then you have heard of the striking resemblance of Katy Perry and Zooey Deschanel.

Perry is the pop princess with songs like "Roar," "Teenage Dream," and "Dark Horse." Deschanel is the star of films like 500 Days of Summer and A Hitchhikers Guide To The Galaxy.

While Deschanel's look is all hers, Perry grew up a blonde. Her look is a result of an image makeover that is common for all stars before becoming famous.

However, the makeup artists may not have intended for Perry to look just like Deschanel. It seems like it was coincidental. In any case, Perry likes to change up her looks, wearing multicolored wigs while Deschanel has the same trademark bangs in every picture. So personality-wise, they are very different, which is good because they sure do look alike.

Monica Potter and Lana Del Rey

There is an age gap between Monica Potter and Lana Del Ray. Potter is 45-years-old and Del Rey is 31-years-old. While Potter was an actress on NBC's Parenthood and has had an enviable career on both the television screen and the silver screen, Del Rey is a singer with an old soul.

She describes herself as a gangster Nancy Sinatra and her songs and videos look like a mix of 50's fashion with a rocker mentality.Monica's hair is normally short and blonde, but in the picture below she sports a brunette wig, which only makes her resemblance to Del Rey stronger.