Which one is the mum? Internet baffled by this image of an ageless woman and her twin daughters

Kaylan Mahomes, a high school student from Indianapolis, took to Twitter last week to share a selfie featuring her twin Kyla and their mother, but the internet was stumped as to who is the mom. 'Mom, twin & me [sic],' Kaylan captioned the image, which has been retweeted more than 20,000 times since it was posted on January 28, sparking a furious online debate over which person in the picture is the eldest.