Blake Lively almost quit acting before being cast as Serena van der Woodsen. She told Vanity Fair that the business aspect of Hollywood "didn't make sense to me because I was 18 and being an artist."
The show came up with the idea to cast Lively after reading online message boards. Fans of the Gossip Girl books wrote that Lively was their ideal Serena, which the showrunners discovered and clearly agreed with. "We didn't see a lot of other girls for Serena," showrunner Josh Schwartz said. "She has to be somebody that you believe would be sitting in the front row at Fashion Week eventually."
She only agreed to be in Gossip Girl if they let her attend college at the same time. Schwartz and fellow showrunner Stephanie Savage promised her that she could go to Columbia one day a week, but she ended up leaving school when the show got so popular.
The Gossip Girl author campaigned for a Scream Queens-esque reboot. Cecily von Ziegesar wants the show to be revived as Gossip Girl: Psycho Killer, a book she wrote in 2002 where "Serena comes back from boarding school to kill everyone."
Ivanka Trump and Jared Kushner only appeared on the show "for the money." Schwartz confirmed that the club scene they filmed in the Boom Boom Room was done for the paycheck and because Trump was a big Gossip Girl fan.