Launched in 2002 at the opening of the Victoria's Secret store on Broadway -- where it was modeled by Brazilian fashion icon Gisele Bundchen -- the Red Hot Fantasy comprises a brassiere and matching briefs.

This is no normal bra and briefs though. Listed in the Guinness Book of Records as the most extravagant and expensive items of underwear ever created, the Red Hot Fantasy is made of finest red satin, and covered with an array of hand-cut gemstones. The bra alone sports over 1,300 stones, including 300 carats-worth of glittering Thai rubies surrounded by sprays of diamonds.

To date, no doubt on account of its exorbitant price tag, the Red Hot Fantasy remains unsold, although it has, apparently, attracted numerous enquiries since appearing in the Victoria's Secret catalogue.

For $12.5 million, for instance -- a full $2.5 million less than the Red Hot Fantasy -- you could wow your partner with the Heavenly Star Bra, the latter studded with 1,200 Sri Lankan pink sapphires and with a whopping 90-carat emerald-cut diamond nestling seductively between its D-cups (the diamond alone is worth $10.6 million). Matching briefs can be bought for an extra $750,000.

Even cheaper, at $11 million, is the "Very Sexy" bra, from the center of which dangles the spectacular 70-carat Excelsior Diamond, the latter cut from the second largest rough diamond ever found.