Click through our gallery to see which celebs have a twin! It's unbelievable just how many celebs have a "Doppelgänger"!

Who would have thought? Beautiful Scarlett Johansson has a twin brother! His name is Hunter and he also works as an actor occasionally. The Johanssons definitely have very good genes! Our next hot Hollywood star also has a good-looking twin...

We were so surprised! Olly murs has a twin brother! Although the "Dear Darlin'" singer could not attend his brother's wedding because he was at an X-Factor casting, the two are still very good friends.

Ashton Kutcher and his twin brother Michael do not really look alike, but they are still close. Michael suffers from a syndrome that causes mobility disorders, so Ashton tries to support his brother as best he can. The pair of twins in the next picture have lived in the White House!

Jenna and Barbara Bush, the daughters of the former President of America, George W. Bush, are the first twins to have lived in the White House!

What an unlikely pairing! Samantha Ronson, DJ and Lindsay Lohan's ex, like to wear clothes that are casual and tomboyish in contrast to her twin sister Charlotte Ronson who favours a more elegant look.

These two look almost identical! Criminal Minds actor Nicholas Brendon and his twin brother Kelly Donovan are like two peas in a pod! They have also acted together and appeared in the series Buffy the Vampire Slayer.

Actor Jon Heder, who became a household name after starring in the film Napoleon Dynamite, also has a twin brother. His brother is called Dan and looks just like him!

Canadian actors Aaron and Shawn Ashmore look very similar indeed! Which isn't really all that surprising seeing as they are twins after all! The dynamic duo have also acted together and both appeared in the TV series Smallville. Aaron went on to star in other successful productions, such as X-Men.

Benji and Joel Madden share their passion for music and for Hollywood women! Benji is married to actress Cameron Diaz and Joel to model Nicole Richie. The two brothers also have a band called "Good Charlotte".

Former Scrubs actress Judy Reyes has a twin sister called Joselin who also starred in an episode of  Scrubs and played Judy's sister. She also appeared in some Law & Order episodes.

Singer Alanis Morissette, who had a world hit with her song "Ironic", has a twin brother: Wade Imre Morissette.

Supermodel Gisele Bündchen has a beautiful twin sister. Patricia also used to work as a model, just like her sister Gisele. She has now stopped modelling completely however, and is Gisele's manager instead.