A New Zealand woman is auctioning off space on her backside to be tattooed in a bizarre money-making scheme.

Tina Beznec, from Lower Hutt, says the winning bidder can choose whatever design he, or she, wants tattooed on a nine centimetre square of her bottom.

The auction listing has become a viral hit, attracting more than 170,000 hits and bids of more than £5,500.

Ms Beznec, who says she will give 20% of the proceeds to charity, said: "I'm just trusting the winner of the auction will not do anything too stupid.

"I think it's amazing that, you know, it's gone global. Gone viral over the internet.

"Everyone's talking about it. It's quite a big topic. So, yeah, it's awesome," said Tina.