It was never the height of fashion and cost under $100 to make, but the dress that made Prince William fall for Kate Middleton could one day be worth $160,000.
The prince first noticed his bride-to-be when she paraded down a catwalk at university in a sheer dress you could see her underwear through.
William liked what he saw and the rest is history - including the dress - which experts say could become as valuable as Princess Diana's clothing if William ever becomes King.
"With important royal items like this, if someone has got the money they will just keep on bidding," auctioner Christine Satchett said.
"I imagine she could get someone to pay $16,000. But in 10 years to come if Kate was on the throne it could reach up to $160,000.
"The price could go up ten-fold - it was the same with Princess Diana's clothes."
The sheer dress was designed by college student Charlotte Todd who has had it sitting in her wardrobe for years and once rejected an offer of $1600 for it.
Although she didn't become a fashion designer after uni, Todd says she would never sell the dress - but she might give it to Middleton in exchange for a wedding invite.
"I don't think I'll sell it - I want it to be in a collection of Kate's royal dresses in the future," Todd told the Daily Mail.
"She looked fabulous in my dress and I think she could become a style icon like Princess Diana - so the dress could become a part of fashion history."
© Copyright 2013 dmgRadio Australia