Meet Iriss and Abyss, the twin feline phenoms taking the Internet by storm. Not only are their pristine white coats adorably fuzzy, they both have spectacularly gem-like eye colors. The twins have a condition called heterochromia iridum, meaning that each eye is a different color—in the case of Iriss and Abyss, one eye is blue while the other is somewhere between gold and brown. This can occur in humans and animals, and has no medical disadvantages, which means that Iriss and Abyss can flaunt their beautiful eyes for the camera so their Instagram fans can fawn over them.
Their Russia-based human, who is simply referred to as their “Daddy,” has created an account for the twins' sassy photos, complete with an original logo and brand name, making them known as “Sis.Twins.” Some of the images show the sisters smelling flowers or peacefully curled up for a nap, but most of the time, it's just Iriss and Abyss doing what they do best—staring unblinkingly into the camera with those beautifully multi-colored eyes of theirs.