Next month I'm attending a black tie wedding with my girlfriend and this will be my first black tie wedding. I have four possible options: 1) Wear my black pinstripe suit. This option is the least expensive yet is kinda cheap. 2) Rent a tux. Satisfies black tie requirement but rented tuxes can look kinda crappy. 3) Buy a cheap tux on Ebay. This option isn't expensive but cheap tuxes on Ebay are all polyester. 4) Look for a used tux. Hopefully this option will yield a tux that isn't polyester. Has anyone been in a similar situation?