Grimes has never been one to do things by the book - either in her musical life, or her personal life.

This is the pop star, after all, who named her child (whose father is Tesla founder Elon Musk)  X Æ A-12.

So really, the fact that she has been showing off her... unusual new tattoo on social media shouldn't surprise anyone, but this is just plain weird.

The Canadian musician, real name Claire Boucher, has gotten a huge tattoo that spans her entire back and is essentially supposed to look like 'alien scars'.

She posted the picture on Instagram of the tendril-like pattern that criss-crosses her back in white ink, saying "Don’t have a good pic cuz it hurts too much and I need to sleep haha, and it’ll be red for a few wks , but gna be beautiful alien scars."

It seems that the tattoo was designed by 'digital fashion artist' Nusi Quero, who has come up with creations like the below in the past:

Tattoo artist Tweakt, meanwhile, shared more photos of his work on Grimes on his own Insta: