The phrase is a plain everyday German compliment meaning 'nice costume too', the kind of thing heard at Halloween parties, Fasching parades and cosplay conventions. Short voice clips like this travel well online because the line needs no context to land, and German-language meme sounds have a steady audience among creators who caption or repost them. Its compact length makes it a handy drop-in reaction for costume reveals and dress-up compilations, where it now gets reused as an approving punchline.
About this sound
The German 'Kostüm auch schön' sound clip: a short spoken compliment of someone's costume, lifted for Halloween, carnival and cosplay reaction memes.
This two and a half second clip captures a short German voice line, 'Kostüm auch schön', delivered as a quick approving aside. The voice is casual and conversational, the sort of comment someone drops while admiring another person's outfit at a party. Played on its own it works as a playful stamp of approval, slightly tongue in cheek, that lands instantly in costume and cosplay content where the compliment becomes the joke.