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On Monday night’s season finale, Serena, in a Yigal Azrouel dress, Carla Reiter necklace and MCL cuff, and Blair, in a Parker blouse, Topshop skirt and Noir bracelet, turn to each other for advice on their respective dramas. While Blair decides whether to salvage her relationship with Chuck and meet him on top of the Empire State Building, Serena faces a Gossip Girl blast about Dan that threatens her relationship with Nate. Plus, the infamous Georgina Sparks returns and she, as always, has a quite the agenda! Click on to get more dish about Monday’s episode (airing May 16th at 8 p.m. EST on the CW) and to find out exactly what the girls are wearing—head-to-toe!