Used to do cosplay at US SF conventions, but that was years ago. I still have most of the costumes; there is a FEMC Headliner (mecha pilot) uniform (I'm not nearly thin enough to play a fatima!), a Gatchaman outfit (for a fanfic member of the Gatchaman back up team, Raptor Force - I HATE pink and Jun / Princess's character tends to irritate the heck out of me at times...) a Cosmo Tiger (Yamato fighter pilot) uniform in my collection. (In addition to the costumes based on other American SF books, like Keeper's garb (from Darkover), two different uniforms from Space:1999, a Star Trek uniform from the first few movies, an Imperial fighter pilot's uniform from Star Wars... I was also in the SCA and had 6 or 7 medieval outfits, several Japanese kimonos, hakama, etc. that I sewed, (some of which got used in the SCA for a Heian period character I was running) and currently participate off and on in Civil War re-enactments. At one point, while I was in the SCA, I was actually able to make some pocket money by sewing garb for other people who didn't know how to sew... Yep, for a while was a member of the SF/F Costumer's Guild as well.