 The fitness boom of the 1980s led to one of the biggest leaps in the evolution of the bikini . According to Mills , " The leg line became <unk> , the front was <unk> , and the straps were <unk> . " Women 's magazines used terms like " Bikini Belly " , and workout programs were launched to develop a " bikini @-@ worthy body " . The tiny " fitness @-@ bikinis " made of lycra were launched to cater to this <unk> ideal . Movies like Blue Crush and TV reality shows like Surf Girls have merged the concepts of bikini models and athletes together , further accentuating the toned body ideal . 
