How Many Girls Are in This Picture?

Are there two, four, or even 13 girls? We have the answer.

Via Instagram

A fierce debate has broken out on the internet over this photo, uploaded to Instagram last week by Swiss photographer Tiziana Vergari. The question: How many girls are actually in the picture? Are there 13 similar-looking girls on a casting call? Or maybe four girls from two sets of twins? Could it be four girls looking into two mirrors? Scroll down past these theories to learn the real answer.

The solution: The photographer has confirmed that there are only two girls in the photo, and they are believed to be her daughters.

(H/T Daily Mail)