North Central High School student Kaylan Mahomes posted a picture of her, her twin sister Kyla and their mother on Twitter Jan. 28. The tweet just said “Mom, twin & me.”

A happy family selfie that has turned into a worldwide guessing game of which woman is Kaylan and Kyla’s mother, due to the youthful looks of all three women.

The photo has been retweeted nearly 19,000 times and “liked” by more than 30,000 people. Even CNN took the story on, though it gave no clues to the answer to the burning question.

The post’s popularity also spurred an Instagram page created by the family.