This photo, posted on Instagram by user @tizzia in Switzerland last week has had over 13,500 likes and almost 1,000 comments, yet no one seems to know how many girls are in the photo. The most common answer is two, but is anyone really sure?

Although Tiziana has cleared it up and stated that there are two sisters, both looking into a mirror, the debate continues. Oh, the internet!

Can you tell?

Recommended

Plan Your Cairo Adventure: Lovin Travel’s Guide To Egypt’s Vibrant CapitalPlan Your Next Trip To Sri Lanka: Lovin’s Travel Guide To The Most Scenic CountryIran Announces Visa Free Travels For GCC Residents

View this post on Instagram

A post shared by tiziana vergari iPhoneography (@tizzia) on Mar 6, 2016 at 1:47pm PST

‘Look at the shadows’

‘… 4th girl has it (collar) only on 1 side’

This sort of web craze reminds us of the blue dress madness that took place last year 

It’s almost exactly a year ago, must be something in the air!

Read next: Facebook is uniting India and Pakistan…all in the name of cricket