Gossip Girl decides to liven things up at the Constance Billard and St. Jude's graduation by sending out a shocking and damaging email blast in the midst of the commencement ceremony, stirring Serena to come up with a plan of attack. The Mean Girls (guest stars Yin Chang, Nicole Fiscella, Amanda Setton and Dreama Walker) challenge Jenny to throw her hat in the ring to succeed Blair as Queen Bee next year. Lily and Rufus get engaged and move in together. With Blair's blessing, Jenny becomes the new queen. Chuck finally admits his love to Blair and the two reconcile. Nate decides to go on the backpacking trip with Vanessa, while Georgina recovers Dan's money and requests Blair for a roommate at NYU. Carter Baizen reveals to Serena where her father is. In the end Serena is going to Brown, Blair, Dan, Vanessa, and Georgina are going to NYU, and Nate is going to Columbia.