Overview
Jennifer Tallulah Humphrey is one of the characters in both the Gossip Girl and The It Girl series of novels by Cecily von Ziegesar. She is portrayed by Taylor Momsen in the Gossip Girl television adaptation on The CW.
Novel series
Gossip Girl
Jennifer Humphrey is the daughter of Rufus Humphrey, an editor of Beat poets who has never been published himself, and Jeanette Humphrey, who ran off with a European aristocrat. She has an older brother, Dan Humphrey, an aspiring writer. Jenny is a student at the Constance Billard School for Girls, a small, elite, all-girls school on the Upper East Side that Serena van der Woodsen and Blair Waldorf also attend. In the book series, Jenny is described as a short, well-endowed brunette, but the television show depicts her as tall, skinny and blonde.
In the Gossip Girl prequel It Had to Be You, Jenny is noted for having a rather flat chest until she begins taking breast enlargement supplements, which are the cause of her DD cup size.
From Wikipedia (CC BY-SA 4.0).