I usually keep an inventory of bikinis for my swimsuit shoots. Sometimes I get them from clients, sometimes I buy them. Normally I try to use the model's own suits because I assume they feel comfortable in them (both the fit and the style) and it becomes "their" shot. I stay away from older, worn, or frayed suits for sure. I use my suits if they look better than the girl's suits, which happens more often in California than Florida (Florida girls seem to own better suits....?). I always make the girls wear underwear if they try one on but don't actually shoot in it, but if they try it on without underwear or use it in the shoot, I get it professionally cleaned - absolutely. Also, I use a system I call "3rd girl keeps it". I'll shoot a suit no more than three times, and the third girl to wear it keeps it. Since my calendars are from stock, I can mix and match girls and suits and if you've seen enough of my calendars at one time, you'll see certain suits show up on different girls and different settings.
With lingerie, I see no reason why it can't be cleaned and reused. I know Playboy sends all their stuff out for dry cleaning and its not a problem. This stuff gets expensive.
Regards,
Andy Pearlman
Andy Pearlman Studio