I think it's much safer to use ice cold water if she's still wearing it.
A technique used by Steve Reyes who used to work for Super Chevy/Popular Hot Rodding was to lightly mist the girl's shirts with a spray bottle filled with cold water!
I've seen this technique applied in person back in the early 90's when I used to hang around with him. He did this on my girlfriend at the time when she posed with my Chevelle for a feature in Super Chevy, she posed with some other friends' cars too.
Steve used to come to Connecticut once in a while and I would line up a bunch of cars for him to shoot for the magazines. One time he did a private session with my friend's 69 Camaro for the defunct Auto Buff magazine (topless models would be photographed with the cars) and asked if my girlfriend would pose for it.
She said yes but only if me and my friend were not watching her pose. So, we went into his house while they
did the shoot in his backyard.
Now, like any red blooded guys, we of course could not resist watching thru his back window of my friends house!
Unfortunately, Auto Buff went belly up shortly after and her pictures never got published but Steve sent me the pics! (my Chevelle did appear in the magazine but without a model)T he girl and I had broken up in the meantime and I was tempted to mail the pics to her parents but I never did. Eventually, I threw them out after I got married.
Guess I should have kept them in case she ever became famous but she is probably dead of AIDS by now. She was a wild, wild girl!
Those were the days.