Twins are just too good a proposition for confusion for the film world to overlook - all that walking in unison, finishing each other's sentences and, oh yes, pretending to be one another on celluloid.
Zoe Kazan plays Laurel, and Audrey, in 'The Pretty One'
Latest in line is 'The Pretty One', a sweet, romantic comedy about identical twins and mistaken identity - starring Zoe Kazan, Jake Johnson. Watch the trailer above.
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Twins Leia and Luke... hang on a minute!
To mark the film's DVD release, here is our countdown of the weirdest, comic, and sometimes sinister, twins on film. (And keep your eye out for Tom Hardy in the next few months, playing not one but both Kray gangsters in the latest adaptation of their strange story.)
In the meantime...