It looks like a pretty popular party. Someone asks Taylor where some people are from, and the subtitles claim she asked, "Where are they from? Upper East?" I don't think that "Upper East" was actually said. Anyway, Taylor's answer is "around!" Taylor is worried about the public school and private school kids mixing. Camille finds the crowd anxious and nervous, and Kelli decides not to talk as much as Camille because that way she'll enhance her social status. Then Sebastian shows up, and he seems pretty interested in the idea of a party that's all girls except for him.
Sebastian is extremely popular among the girls, especially Taylor. Kelli decides that she wants to leave now that she doesn't have exclusive Sebastian rights, and Camille goes with her after making fun of Sebastian to his face. Luckily, Sebastian does not appear to have enough self-awareness to notice the mockery.
Mid-commercial bonus content: Jessie shops for clothes. Apparently she hates Gossip Girl because they film on her block and make her favorite places too popular.
The next scene is apparently at a place called Apiary. There are fewer bees than I was hoping for. It must be that Colony Collapse Disorder I've been hearing so much about. Jessie's there with her friend Zoe talking about a place to buy clothes. Zoe confides that sometimes she wears clothes that cost less than twenty dollars. Scandalous! Jessie says that it's because she's "so downtown". Hey, there's nothing wrong with extremely cheap clothes. If you want to be properly snobbish, then everything you wear should either have cost you thousands of dollars at incredibly exclusive stores or have been picked up for a pittance at a garage sale somewhere. Jessie's going to a fashion event where she'll meet fashion people. Zoe wants to know what the deal is with Jessie going places with PC, but Jessie swears that they're just best friends now. They used to date. Oh! and Jessie says there's a gossip group on Facebook. That's ... not news. I guess it's specifically gossip about their circle.
PC's car pulls up and Jessie gets in. PC wants her to introduce him to people because he won't know anyone, but Jessie insists that PC's job will be to help her break the ice with people. PC takes the opportunity to quote Jessie describing his charming ways and how he'll get eaten by a monster or something.