When it comes to underwear women are spoilt for choice. There are knickers, Brazilian briefs, boy shorts, thongs and of course the popular G-string.
But one woman may have unwittingly sent a multi-million pound industry into disarray after creating a unique take on female undergarments.
Nina Sparr from Sweden has designed underwear made from all kinds of 100% human hair, sourced from all over the country.
"It's a bit special. They are knitted by 100% human hair and it is not mixed with anything else or coloured," she told Swedish website Expressen. "There is hair that comes from salons, and clients of mine who have donated because I work with them full time."
Sparr reveals that she won't be taking on Ann Summers just yet, because the quirky pants – which have been tried and tested by models – are far from comfortable .
"The [hair] sticks of course a bit. For hair is a mess. You know, like when you have your hair cut at the hairdresser and it falls down in your sweater and then sticks."
But she hasn't stopped at underwear. The designer and ship owner has used the hair to knit together a variety of items including jewellery, paintings and purses.
Her products have already created a buzz in her home town with Sparrs even receiving custom orders such as a bridal crown made from the wife-to-be's actual locks.
"It becomes so personal when it is your own hair," Sparr said. "If, for example, [you are getting] married and have [your] own hair when ordering a bridal crown. It's incredibly personal, and therefore it has lots of emotion in it."