Data scientists from New York-based dating app, Hinge, analysed their members' photos to reveal which profile pictures get the most likes.
The team assigned 35 unique photo tags, such as smiling with or without teeth, to a random sample of 1,000 photos.
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And while you might see them as old-fashioned, black and white photos were a huge hit, increasing likes by a huge 106 per cent.
Hinge also discovered that spontaneous snaps were more likely to get a like than posed photos.
Anyone with an online dating account will know that choosing the perfect profile picture for your page is a tricky business.