Elon Musk’s girlfriend Grimes has showed off her interesting new ‘alien scars’ tattoo which covers her whole back.

The 33-year-old - who welcomed son X Æ A-12 with Elon last year - shared the snap of her back on Instagram to her 1.7 million followers on Sunday.

Her new tattoo covers parts of her shoulders, with the intricate entanglement of lines reaching her lower back.

“Full back in white ink by @tweakt w sum help from the alien computer brain of @nusi_quero,” the Genesis singer captioned her post.

“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. Hope everyone’s having a good day.”

Her fans were quick to compliment the star on what looked like a painful process.

Grimes
Grimes shared her alien scars tattoo

“Battle wounds from a visualized war,” one user commented.

Another wrote: “This looks painful to get,” while another said: “OMG GORGEOUS.”

“I love you! Looks so good bestie,” one person posted.

Grimes
Elon Musk's girlfriend Grimes says she is 'ready to die on Mars'

Considering Grimes - real name Claire Elise Boucher - previously mentioned her dream of moving to Mars, it’s no surprise her latest tattoo is alien-themed.

She wants to relocate after she turns 50 to help start a human colony there.

Grimes said the move would be a case of "manual labour until death most likely" but admitted that she hoped that could change.

Elon Musk and Grimes
The pair welcomed their son X Æ A-Xii in May last year

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The star had also posted a snap of herself posing in front of Elon’s Starbase facility in Texas.

“Ready to die with the red dirt of Mars beneath my feet Starbase Tx,” she wrote alongside her post.

At the beginning of March, Elon, 49, made the claim that his company will touch their ships down on Mars "well before 2030".

He plans to send one million people to Mars by 2050 and build a city there.