Was originally pitched as a feature with Lindsay Lohan as Blair Waldorf. When that fell through, its backers (who had the rights to the stories) approached Josh Schwartz about turning it into a series.
Originally, Georgina Sparks was offered to Mischa Barton, who turned down the role. Michelle Trachtenberg was then cast as Georgina Sparks.
Every episode title is a word play on the title of a movie.
The Gossip Girl TV series is based off of the Best Selling Novels "Gossip Girl" written by 'Cecily Von Ziegesar'.
The name of Rufus' band, "Lincoln Hawk", is also the name of Sylvester Stallone's character in the movie Over the Top (1987). That movie is mentioned several times as being a cult-classic in "The O.C." (2003), the previous show from Josh Schwartz, the creator of this series.
Leighton Meester had to dye her naturally blonde hair brunette merely to audition for the role of Blair Waldorf.
The show's beginning date took place, chronologically, after it was aired. The show aired in Canada on September 18, 2007 and aired in the US on September 19, 2007. The show starts on Wednesday September 23, 2007 and ends on Saturday September 26, 2007, thus all dates in the Pilot fall after their air date.
Blair Waldorf lives at 1136 Fifth Avenue, New York NY 10128 in the penthouse. Chuck Bass and Serena van der Woodsen live in suites at 455 Madison Avenue, New York, NY 10022 - otherwise known as the Palace Hotel.
The character of Lily van der Woodsen was originally named Darla, until the writers changed it at the last moment.
The series has become so popular that a tour of Gossip Girl sites has been created in New York City, by the same people who created the "Sex and the City" (1998) Tour.