Penn Badgley gained widespread recognition for his role as Dan Humphrey in the popular teen drama series 'Gossip Girl'. The show follows the lives of privileged teenagers living on the Upper East Side of New York City, with Badgley's character being an outsider who becomes entangled in the world of the wealthy and elite. 'Gossip Girl' is known for its addictive storylines, glamorous setting, and memorable characters, making it a beloved series among fans of the genre.