SINGAPORE - Perhaps, they did it to drum this into everybody: We look nothing like each other.
Red Hot Chili Peppers drummer Chad Smith and actor Will Ferrell, often confused in public for each other, recently went on The Tonight Show for a celebrity charity drum-off.
Dressed in identical outfits and trash-talking in front of host Jimmy Fallon, Smith, 52, and Ferrell, 46, tried to out-drum each other (Ferrell mimed to a professional drummer in the background) to settle the score on who is the imposter once and for all.
Comedy aside, the two men could pass for twins. SundayLife! looks at other doppelganger pairs in showbusiness.
ZOE SALDANA, 35, AND THANDIE NEWTON, 41
The same chestnut-coloured skin, wide, alluring smile and cheekbones that look like they can cut you: It is no easy task trying to tell Saldana (above left) and Newton apart.
Their filmography might offer a clue, though - just remember that the American Saldana was the one CGI-ed blue as the alien Neytiri in the science-fiction blockbuster Avatar (2009), and a comely spacewoman in the recent Star Trek reboot films (2009 and 2013); while Briton Newton has played more down-to-earth characters, as Tom Cruise's love interest in Mission: Impossible II (2000), and a doctor's wife on TV's ER between 2003 and 2005.
What is a no-brainer is the fact that they are both drop-dead gorgeous.
JOHN HURT, 74, AND IAN MCKELLEN, 75
McKellen (right) plays wizard Gandalf in The Lord Of The Rings movies, as well as powerful mutant Magneto in the X-Men films, but it seems that the English actor in real life has a superpower of his own: Cloning his face and showing up in the form of award-winning actor and compatriot, John Hurt (The Elephant Man, 1980).
PEDRO PASCAL, 39, AND JEREMY RENNER, 43
Pascal (above left), the Chilean-American hunk who plays new character Prince Oberyn Martell in HBO's fantasy series Game Of Thrones, oozes the same effortless bad boy charm as brooding Oscar nominee Jeremy Renner (The Hurt Locker, 2008; The Avengers, 2012).
It is a toss up between the two as to whose gaze is more piercing.