“It’s obviously 2,” wrote one person.

“There are 4 girls, the first one closest to the camera, the 2nd one has her head turned looking at the 3rd whose head isn’t on the same plane as the 2nd and the 4th girl is looking in the mirror. The 4th girls’ point of view in her eyes is different, she’s looking at the camera whereas the first one is looking up screen past the camera,” wrote another.

“1st girl has collar lining (Or whatever it’s called) on both sides, 4th girl has it only on 1 side,” another reasoned.