naked or swimsuit for spray tanning?

Question: Is it ok to spray tan naked or should I wear a swim suit?

Answer: Most salons are quite used to spray tanning naked people, so it should be OK, however others will ask you to wear a disposable thong (or g-string in Australian).

You should respect the comfort of the spray tanning technician and comply with the salon's rules.
If you would want to wear a swimsuit make sure you take one in a dark color, preferably the one that you do not mind getting destroyed as spray tanning solution will possibly stain it permanently.