Stocks are up! Time to show a little leg

Yesterday the Dow passed 13,000 for the first time since May of 2008.

But... If you were paying attention to New York Fashion Week, this would be no surprise.

Philip Lim at New York Fashion Week 2011 and 2012

Some economists think that SKIRT LENGTH reflects economic health. This phenomenon is called the "Hemline Indicator." The shorter the skirts on ladies, the higher the stock prices on Wall Street.

(For example--Miniskirts were popular in the '20s, '60s and '90s, when our economy was booming, whereas maxi-dresses came into vogue after big Wall Street crashes).

Business Insider did a study of 25 designers' collections, looking at over 2,000 looks, and compared the year-to-year change in hemline length.

2012 registered almost 10 points higher on the "Hemline Index" than 2011.

So...If you trust Marc Jacobs and Diane von Furstenberg as your financial analysts, now might be a good time to invest.

--Producer Libby Denkmann