Twincredible! As Isla Fisher admits even her own family confuse her with Amy Adams - we reveal the other spookily similar celebrity doppelgangers

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Isla Fisher shocked family and friends when she revealed that she had cheekily superimposed her lookalike Amy Adam's face over her own in her Christmas card.

The Australian actress revealed that she took full advantage of their likeness and in the photograph, that features on the front of the card, husband Sacha Baron Cohen is joined by their kids and Amy rather than Isla. 

But it isn't just Miss Fisher who has her very own doppelganger. Despite the fact that they share no relation plenty of stars have spookily similar resemblance to one another.

As Isla Fisher (left)  reveals that she used superimposed Amy Adams' (right) face on her Christmas card we reveal the other celebrities who share a strong resemblance

From identical facial hair to matching eye colour it is surprising that these celebs haven't undergone DNA testing.

One of the most famous sets are celebrity twins are singer Katy Perry and her raven haired 'twin' actress Zooey Deschanel.

The pair have often been noted for their incredible likeness sharing not only the same hair colour but also an identical skin tone, nose and eye shape.

Another pair who are often compared to one another are actresses Keira Knightley (left) and Natalie Portman (right). The stunning pair have a very similar bone structure and share a slender nose

Keira (left) has also been compared to Star Wars actress Daisy Ridley (right) who isn't too fond of the comparison 

One of the most famous sets are celebrity twins are singer Katy Perry (right)and her raven haired 'twin' actress Zooey Deschanel (left) though Zooey admits she finds the comparison 'annoying'

Heath Ledger (left) may have passed in 2008 but his good looks live on through fellow actor Joseph Gordon-Levitt (right)

However, the actress has admitted that she has found the comparison 'annoying' in the past. She told MTV: 'It's a little bit annoying, to be totally blunt' adding 'It's sort of strange to be associated with someone that's doing such different stuff than me. It's weird'

Another pair who are often compared to one another are actresses Keira Knightley and Natalie Portman. The stunning pair have a very similar bone structure and share a slender nose.

At the age of 12, Knightley was hired due to her close resemblance to Natalie Portman, who had secured the role of Queen Amidala's in Star Wars: Episode I - The Phantom Menace.

Remarkably Elle Macpherson's (left) supermodel worthy looks have been said to resemble aging rocker Steve Tyler (right) due to the pairs full lips and slim nose structure

Bradley Cooper (right) and Ralph Fiennes (left) similar taste in hair style has meant they have been compared to one another

Gwyneth Paltrow (left) and Jodie Kidd (right) share similar hair colour and face structure making them look like sisters

Both with a rugged beard and the same forehead shape Tom Hardy (left) and Logan Marshall (right) could almost be brothers

Knightley played the part of Queen Amidala's handmaiden Sabé, and reportedly many people had trouble telling them apart when they were in full costume. 

Daisy Ridley has also been compared to the British actress Keira but once again she admits she isn't thrilled with her likeness.

The Stars Wars actress said: ‘This is one thing that I’m actually so “ugh!” about. But it’s like, why do I have to be like someone else? People have always said that I look like Keira Knightley. But it is actually really frustrating.’ 

He may have passed away in eight years ago but Heath Ledger's good looks live on in the form of fellow actor Joseph Gordon-Levitt.

Joseph, 35, has often been compared to the late Ledger with the actors sharing similar dimples and eye shape.

Sharing the same age Mark Wahlberg and Matt Damon, 46 are often mistaken for one another thanks to their strong jaw and forehead shape.

Jennifer Lawrence (left) and Haley Bennet's (right) wavy hair and face shape has earned them doppelganger status

Sharing the same age Mark Wahlberg (left) and Matt Damon (right), 46 are often mistaken for one another thanks to their strong jaw and forehead shape

Damon admitted to Absolute Radio: 'I've talked to Mark about this because he gets people [that] come up and say, 'I love you in The Bourne Identity.

'So Mark and I have a deal. If we're mistaken for one another, we have to be as polite as possible.' 

And it isn't just stars of the same gender that share freakily similar features. BBC presenters Aled Jones and Clare Balding have been clocked for their sibling-like traits.

Remarkably Elle Macpherson's supermodel worthy looks have been said to resemble aging rocker Steve Tyler due to the pairs full lips and slim nose structure.

Famous for their magical roles in Harry Potter and Lord of the Rings Daniel Radcliffe (left) and Elijah Wood (right) have eerily similar qualities seen in their eye colour and smile

Star Trek's Zoe Saldana (left) and Thandie Newton (right) both have a big smile and dark wavy hair making them look like long-lost sisters

Eva Mendez (left) and Kelly Brook (right) have a shared passion for the Hollywood wave hairstyle and their face shape is extremely similar