"It's either 4 by 3 in a photo or 9 by 16 in a video, and cropping it down to square is pretty brutal." Instagram spokesperson Christine Pai told the Verge that the company is "testing a vertical ...

And square photos are sort of the heritage of Instagram," he said. "But at this point, most of what’s uploaded, both photos and videos, are vertical in their orientation. And it just is a bummer ...

On Tuesday, Eilish, 20, shared an Instagram image of herself rocking the new look with a matching black mask and black square emoji. The photo has already garnered more than 7.5 million likes.