Dress storage help please!

[FaintlyMacabre]

Can anyone advise me on how best to store silk evening dresses please? I hardly ever wear them (only have 3 and not even sure how I acquired that many) so don't really want them taking up wardrobe space in one of those hanger bag things.
At the moment they're just loosely folded in a paper bag. There must be a better way!

Do you have room on top of a wardrobe or somewhere to store them in the sort of wedding dress boxes dry-cleaners sell? (Not that I've tried this - I use the hanging bag option in my not very spacious wardrobe and in dd's wardrobe which has more space.)

Could you hang up all three of them on some of those space saver hangers - the sort that hang one off another?

If you fold them away so you can't see them, you know you'll never wear them, and then you might as well get rid of them. Also it's nice to open your wardrobe and see balldresses and evening dresses.