 In a single fashion show in 1985 , there were two @-@ piece suits with cropped tank tops instead of the usual skimpy <unk> , suits that resembled bikinis from the front and one @-@ pieces from the back , suspender straps , ruffles , and deep navel @-@ baring cutouts . Metal and stone jewelery pieces are now often used to dress up look and style according to tastes . To meet the fast pace of demands , some manufacturers now offer made @-@ to @-@ order bikinis ready in as few as seven minutes . The world 's most expensive bikini was designed in February 2006 by Susan Rosen ; containing 150 carats ( 30 g ) of diamond , it was valued at £ 20 million . 
