I feel like you stuffed too many character descriptions in here. I had a hard time remembering who was who, and it got a little bit confusing. For me, it's too much introducing all of 'The Prettys' all at once in one section/prologue, since you also give a lot of details about each girl. It would be much easier if you could just introduce them one by one, or just tell less about each of them. You'll have time to characterize them later!
Overall, this was a fun read. This piece is a bit rough in some places, though. You can add a few more commas in several of your sentences, and break other down a bit; I couldn't find any major problems. And, I think you did well with third person!
Hope I helped. I'm looking forward to reading the first chapter-
So I edited it a bit, as I'm learning some more grammar rules, no no, this isn't really cliche at all, at least not to me seeing how I know what's going to happen. Just wait and see I suppose : )
