“We base our costumes on the price of the Nikkei average of the day. For example, when the index falls below 10,000 points, we go on stage with really long skirts,” Mori explained. The higher stocks rise, the shorter their dresses get. With the Nikkei index ending above 13,000, the four went without skirts altogether on the day of their interview with The Japan Times, instead wearing only lacy shorts."
http://www.japantimes.co.jp/news/2013/05/03/national/girl-group-bases-style-on-nikkei-ups-and-downs/
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Girl group bases skirt length on Nikkei ups and downs
www.japantimes.co.jp
Kanon Mori, Yuki Sakura, Hinako Kuroki and Jun Amaki have been following the Nikkei 225 stock average obsessively since Prime Minister Shinzo Abe took office in December.
http://www.japantimes.co.jp/news/2013/05/03/national/girl-group-bases-style-on-nikkei-ups-and-downs/