Stirrup pants hit their fashion zenith in the mid-80s, in 1985-1986 to be precise. They consist of a knit fabric pant that tapers gradually in towards the ankle, where they have a stirrup. The stirrup is an elastic strap that fits under your heel. I am sure that if you are an equestrian of some kind such a pant would have some obvious appeal and usefulness, but if, on the other hand, you are just getting dressed to go to school or the grocery store, there really is no excuse. Even on the best of figures, stirrup pants had a tendency to make the tops of your legs look big. They create a triangle-leg effect that is not flattering or desirable.
Source:Denning, Alli. Like totally 80's. Denning e-solutions. 9 Oct 2009. Web. 25 Apr 2011.