In "Seventeen Candles," a birthday bash is hosted by Serena van der Woodsen. The celebration was held at an Upper East Side loft that was filled with sushi chefs rolling out maki rolls and sashimi, and Harajuku-styled waitresses serving sake martinis. Guests entertained themselves with a Guitar Hero tournament. At midnight, a three-tiered, sparkler-clad cake was displayed for the birthday girl.
The Masquerade Ball
In an episode entitled, "The Handmaiden's Tale," everyone was required to come in full Victorian garb and masks to the masquerade ball, which was held at New York City’s Gotham Hall. The décor baroque in style, with elaborate silver goblets filled with elaborate floral arrangements and tables set with heaping piles of aperitifs.
In the episode entitled "Hi, Society," a tried and true tradition on the Upper East Side is portrayed: cotillion, where debutantes must enter into society by presenting themselves as ladies. That elaborate entrance includes an escort, a choreographed dance, and a formal soirée with champagne, a five course dinner, and white-glove service.