Have you seen it though?
Even by the standards of everyday wear here in the Soviet Socialist Republic of Canuckistan (well, OK, maybe not at this time of year) it's not short, barely above her knees. Never mind in the country that invented the thong. Not particularly form fitting either, quite baggy. I really don't see the big deal, there's got to be something more to the story but my Brazilian Portugese comprehension is non-existent.