The most expensive piece of diamond apparel ever made is making its debut in the 2006 Sports Illustrated Swimsuit issue. The $30 million Diamond Bikini was designed by Susan Rosen who worked with Steinmetz Diamonds to create the bikini, which was a special commission.

The bikini is made up of over 150 carats of D Flawless diamonds, some of the rarest in the world including a 51ct D Flawless Pear Shape, a 30ct D Flawless Emerald Cut, a pair of 15ct D Flawless Rounds and a pair of 8ct D Flawless Pear Shapes. All of the diamonds are free of inclusions or nature's birthmarks and are set in platinum.