We are more likely to approach strangers with whom we share a physical resemblance - as is the case with Eva Longoria and Victoria Beckham, who became firm friends after the former Spice Girl moved to Los Angeles with husband David.
Researchers from Wilfrid Laurier University in Ontario, Canada, made the discovery after asking 356 students, who did not already know each other, to attend a series of lectures in small rooms, forcing them to sit next to someone.
The results of the study showed that students who wore glasses were more likely to sit together as were those who had similar length or colour hair, the same colour eyes, or similar body proportions, the Daily Mail reported.
According to consultant psychologist Ingrid Collins, if we look in the mirror we see a familiar image, so someone who looks like us can remind us of our own self or our family. This makes us feel that we know those people a lot better than we actually do, giving us a sense of familiarity.