So who is gossip girl??? For those who have been a fan of this series, you have probably been wondering the answer to this question and most likely, have made guesses as well. I actually get intrigued whenever gossip girl starts to send those text messages or photos to everyone. There’s always a thought bubble coming out of my head saying “Who the heck is gossip girl?” Anyways, here is a video on what the cast have to say who really is gossip girl.