No, Gossip Girl is not a real site. Gossip Girl and it's
characters are a work of fiction, written about in the Gossip Girl
series by Cecily von Ziegesar. Consequently because of the book and
television series popularity, many fans have made their own Gossip
Girl sites. But I'm sure that there are internet sites similar to
Gossip Girl, which track 'it-girls and boys' and spread gossip and
rumors, whether they be true or false.