Somewhere between lingerie, the beach wear and club dress are these bikini jeans. I am interested to see if they catch on in popularity. Revealing the ULTRA low hip-hugging jeans that come with their own built in bikini bottomsIn the long and varied history of fashion faux pas, this may be the worst.But these ultra low-rise, crotch-clutching jeans are virtually guaranteed to provoke a stampede from the usual shameless Z-listers best known for flashing their derrieres in public.The £45 item is worryingly reminiscent of the late-lamented g-string hitched above trousers fad, beloved of the style-free worldwide. Designer Sandra Tanimura said she decided to introduce the designs as her customers wanted very low trousers - but had difficulty keeping them up.She said: "We specialise in making low-rise trousers and our customers wanted them to get even lower."It was very difficult meeting these demands without the trousers falling down."I came up with the idea of using the bikini strings to let the trousers hang really low without falling."Our first two trouser designs were made of lycra but now we make bikini-jeans."