These are from "Gentlemen Prefer Blondes". There are duplicates of varying quality. The last pic is not tuxedo-like, but it is "formal".
Some are from my own collection, others were found somewhere on the web. I apologize for putting links to other poster's pages/pics. It's hard to find gals in tuxes/formal wear via search engines; you almost need to know the name of the woman before you ...
It's that time again: time to begin a NEW "Stars in Hose" topic! Let's start out with some of the slim "summer" pickings that we have to suffer through.