Elon Musk and Grimes forced to change baby's strange name to comply with California law

Grimes and her billionaire love Elon Musk have had to change their baby son's bizarre name after it was found to be in violation of California law.

Their newborn son was initially called X Æ A-12 (pronounced 'Ex Ash A Twelve') but California law prohibits Indo-Arabic numerals in names.

Now the 32-year-old singer revealed in her Instagram comments that the baby's name is now written X Æ A-Xii, substituting in the Roman numerals signifying '12.'

The reveal came after an Instagram commenter asked: 'Did you change the baby name because of Californian laws ? What is the baby's new name?'

Grimes replied: 'X Æ A-Xii,' prompting a different Instagram user to write: 'Nice! Just removed the numbers to confirm to California law.'

'Roman numerals. Looks better tbh,' wrote Grimes, to which the commentator who asked the initial questions wrote: 'you aren't allowed to have numbers in your name so she replaced the numbers with Roman numerals.'

Grimes, a Canadian singer whose Christian name is Claire Elise Boucher, wrote: 'one dash is allowed.'