DECIDING what to call your baby is one of the biggest responsibilities a parent faces.

Finding a name that is unique can be quite a challenge but one Australian mum has taken this task to another level.

2 The mum said the spelling of her daughter's name is "truly unique" Credit: Reddit

The woman, known only by her surname, Mavis, revealed the unusual spelling of her daughter’s name in a lifestyle magazine spread.

And it’s shocked the world.

She sent in a snap of her adorable tot, accompanied with the note: “I’ve always loved the name Kaitlyn but hated how popular it was.

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"So when I found out I was having a girl, my husband suggested we replace the 'ait' with the Roman numeral symbol for eight!"

She added: "Now our daughter is truly unique."

So, instead of spelling the name, Kaitlyn, the child’s name now reads KVllllyn.

2 Keeping Up With The Kardashian's star Caitlyn Jenner spells her name in a more conventional sense Credit: AP:Associated Press

The mum has received a lot of attention for the girl’s name after a Reddit user discovered her letter in the publication, took a snap of it and shared it online with the caption, “Surely a form of abuse”.

One horrified reader commented on the forum: “Assuming this whole thing isn’t a joke, there’s already a few different ways to spell Kaitlyn.

“There’s Caitlin, Katelyn, Caitlyn, and I’m pretty sure there’s more.

"If the idea was to have different spelling, surely they could use one of those?"

While another shocked user said: "I have a long name and when I was in nursery I could never remember how to spell it so I sounded it out. I would be so humiliated."