I can't tell if these people are upset about being at prom, or if that's just the style they were going for. The look on your face is just as important as the clothes you're wearing. It all works together to produce your vibe. I'm definitely feeling the "disgruntled youth" vibes. Some people's overall style does not fit with the usual prom vibe, which is totally cool. Prom doesn't have to be like in the movies. You can just show up, do your own thing, and look the way you want to look.
These two could be characters in a Tim Burton movie, and I mean that as a compliment. They have a very distinctive goth look. They don't just look like your typical Hot Topic shopper, or what a movie might make a goth person look like.