Theresa sent me this link to the Hey Viv! store, where you can buy yourself a brand new 50s-style crinoline, for all your swishy-skirt needs. They're about $27, not including shipping, and also come in black, pink, and red.
I'm not a big crinoline-wearer myself — I have enough trouble getting in and out of cars as it is — but I'm tempted to get one. Just for parties, I'm telling myself, although I know if I had one I'm sure I'd try to wear it every day, like a six-old-girl with brand-new patent maryjanes.
I think some of you have sent me links to other retro-undergarmenty places in the past, links I have carefully filed, never to see again. If you feel generous, leave them in the comments?
Hints for actually managing the wearing of a crinoline are welcome, too.