Unless you have a pretty in-depth knowledge of everything to do with celebrities, there’s a good chance that you won’t know which of them have a secret twin wandering around the planet.

From Scarlett Johansson to Ashton Kutcher, some of the most famous names in the industry have siblings of the same age who are excelling in their own chosen fields but are probably unlikely to get a star on the Hollywood Walk Of Fame anytime soon.

Hunter and Scarlett Johansson

While Scarlett’s twin brother has dabbled in acting in the past, he also has a history of working in politics, having contributed to President Obama’s 2008 campaign before starting a career as a community organiser in Manhatten.

Michael and Ashton Kutcher

Michael, who has cerebral palsy, underwent a heart transplant as a thirteen year old. He now works at a sales company alongside doing motivational speaking for young people living with disabilities.

Joel and Benji Madden

Good Charlotte fans will know that these two are twin brothers, with Benji marrying Cameron Diaz and working as a judge on The Voice Australia, while Joel has been married to Nicole Richie for eight years.

Joy and Eva Green

The star of Miss Peregrine's Home for Peculiar Children has previously opened up about how she and her sister have chosen different paths in life, with Joy (on the far right) currently raising horses with her husband in Normandy.

Sami and Rami Malek

The star of Bohemian Rhapsody and Mr. Robot has a twin brother called Sami, who works as a teacher in Los Angeles. Rami has previously opened up about helping his twin cheat in a college class he hadn’t prepared for.

Nico and Nyle DiMarco

The winner of America’s Next Top Model has a twin brother who is also deaf, but Nico hasn’t let that stop from him from becoming a successful DJ. The pair often support each other on Instagram, even if they don’t necessarily look like they shared the samewomb.

Ben Hart and Olly Murs

The singer had a famous falling out with twin brother Ben back during his X Factor days and the pair have sadly never managed to patch up their relationship. Olly has since claimed that he’d like to put an end to their feud but their drama is still ongoing.

Any surprises here? Tweet us @MTVUK.