It's also hard to tell just how big this back tattoo is because we can only see the upper part of it. There's a chance the black ink is covering the rest of her back in a similar pattern. On the other hand, there might only be an inch of tattoo left beneath her black t-shirt. Who's to say!

Billie Eilish's latest Instagram dump was even more chaotic than usual as the 21-year-old musician debuted the tip of a large back tattoo.