Definately steal and wear girlfriends panty hose but instead of a coathanger wire hoop, go to a fabric/sewing store and pick up a few wooden embroidery hoops (what ladies use to hold fabric when they do needle point). These come in two pieces; an inner solid hoop and a outer hoop that is split and has a screw thingy on it so it can be tightened around the inner hoop.
Take off you girlfriends panty hose and stretch them around the smaller inner hoop. Take a needle and thread and sew the perimeter. Take some scissers and cut off the excess pantyhose material. Use the out hoop to cover the seam you just made by sewing the pantyhose around the inner hoop, and tighten it down with it's adjustment screw. I use old mic clips(broken ones) and screw the hoops to them so you can screw the whole thing to a mic stand. Instant pop filter.