Just what I was thinking... buy a pair you like take them to the meet and ask the SP to put them on while you're in the shower/doing a top'n'tail. Pretty sure they don't cost much and you could probably pick up a job-lot of one-size-fits-all (or go for medium size) for peanuts off of eBay.
Years and years ago used to see this independent polish escort.
Used to take with me a woman's black tennis outfit, she would shower in it while I stood outside the bath tub and kiss and lick her everywhere whilst she showers wearing the tennis outfit.
It was great..
Sadly she found a lover and packed it in!