The see-through dress that allegedly sparked the royal romance of the century has sold for 78,000 pounds sterling, or $125,000, at the Kerry Taylor Auctions Passion for Fashion sale.

Princess-to-be Kate Middleton wore this dress in a 2002 St. Andrews University fashion show. The dress was designed by Charlotte Todd and cost less than $50 to make.

The lingerie-style dress was originally intended to be a skirt. The 31-year-old designer told People.com that her assignment was called 'The Art of Seduction,' which is quite apt, really. I didn't know who Kate Middleton was and I didn't put her in it. It was just pure chance.

Todd said she has never met Middleton but is excited she played even a small part in her eventual engagement to Prince William.

I'm thrilled. Everyone says that the fashion show was when the romance started and when she bagged her prince, so a small part of me will always be part of royal history. It's madness! she said.

Here is a look at the dress:

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Auctioneer Kerry Taylor raised her hammer at the close of bidding for a see-through knitted dress, worn by Prince William's bride-to-be, Kate Middleton. The dress sold for 78,000 pound sterling or $125,000. Reuters
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Auctioneer Kerry Taylor takes bids on the dress worn by princess-to-be Kate Middleton. Reuters
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The designer of the dress, Charlotte Todd, posed with the now famous see-through dress that allegedly sparked the romance between Prince William and Kate Middleton. Reuters
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The see-through dress was set next to a picture of Kate Middleton wearing it during the annual St. Andrew's University charity fashion show in 2002. Reuters
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Designer Charlotte Todd poses with the dress. Reuters
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Auctioneer Kerry Taylor poses with the dress and a photo of Kate Middleton wearing it. Reuters