TV Doppelgangers: Celebrity Lookalikes Who Could Be Siblings

Have you ever clicked through a few TV shows and thought that many of the actors looked like each other? Well, your mind wasn't hazy from binge-watching — throughout the decades, many of our favorite TV stars have closely resembled each other or another celebrity — maybe a musician or an athlete. Click through this gallery to see 18 TV doppelgangers who'll make you do a double-take.

The Vampire Diaries returns for its sixth season this week, and it has made the idea of doppelgangers central to the storyline. Of course, in the CW show's case, the lookalike characters are played by the same actor: Nina Dobrev is Elena and Katherine and Tatia.

Watch a Vampire Diaries scene featuring Dobrev as a trio of doppelgangers:

But maybe Dobrev didn't need to play all those roles… because she's got a real-life doppelganger actress of her own.

Check out Dobrev's celebirty lookalike talking about getting mistaken for the TVD actress:

The Vampire Diaries airs Thursdays at 8 p.m. on The CW; Victoria Justice's Eye Candy airs Mondays at 10 p.m. on MTV.