There is a relatively recent scene of a woman being pied while wearing a metallic silver one piece swimsuit. She ends up topless at some point. I can't remember much else, but I would LOVE to find this scene.

It's not this one is it? Tristan Summer's WAM Vacation

Sadly, no. This was a silver onepiece.

I'm happy to learn of this video, though! Wow!

This kind of sounds like a Slapstick Stuff video with a model named Brandi or Brandy, BUT I don't think she goes topless in that one.

ETA: volume 69, scene 4. https://slapstickstuff.com/SS69.htm