I was slightly confused for a minute. But apparently "serving cunt" is a compliment and its not mean in a sexist way or that she "served her vagina".
It means her outfit is amazing and she is badass.
What does serving cunt mean?
First off, while a lot of people still drop the C-word as a sexist pejorative, “serving cunt” is 100% complimentary. As we already mentioned, it started out as drag slang, typically describing a person with an aggressively cool, bold outfit and/or attitude.
As Urban Dictionary puts it, serving cunt is “used for when your absolutely slaying. the ultimate form of yassification. pussy popping off slay so hard you cant contain it.”