Sonequa Martin-Green (Michael Burnham) got slimed in Star Trek: Discovery s03e01. She is swallowed by some huge space caterpillar and then spit out. Although a classic sci-fi sliming, as far as WaM goes, it's quite underwhelming so don't expect much.

I bet the stage techs had fun doing that to her. Do we get to see her full outfit at any point or is it all just head shots?

There are full body shots in that scene as well, but except for her hair and the back of her coat she looks clean. She is definitely much cleaner than one would expect from the nature of the scene. It almost seems like they were saving budget on that slime