Get yourself Gossip Girl edjumacated, friends! Learn about all the cultural references (pop and otherwise) you might have missed during Season 4, Episode 18, "The Kids Stay in the Picture." If you don't know, now you know.

Credit: Giovanni Rufino/The CW © 2011 The CW Network, LLC. Photo: The Photoshoot in Season 4, Episode 18: "The Kids Stay in the Picture"

The Kid Stays in the Picture
The title of this week’s ep comes from The Kids Stays in the Picture, Hollywood producer Robert Evans’s 1994 autobiography, which was adapted into a 2002 film. It’s packed with sex, drugs, and insider dirt. He and Gossip Girl would probably get along famously.

Benedikt Taschen
Benedikt Taschen is a German publisher of often-eccentric coffee table books, such as a 75-pound book about Muhammad Ali. He legitimately would make a fancy-shmancy yearbook for socialites — although he is apparently too fancy for a Gossip Girl cameo.

Laurie Simmons
Not too good for GG is well-known photographer Laurie Simmons. Her stuff usually features sex dolls posed in lifelike positions, not semi-happy families. Although maybe that is good practice for photographing Serena (Blake Lively).

Kate’s hats
“All I ever wanted was a fairytale,” sighs Blair (Leighton Meester). “Kate Middleton has it. And I have much shinier hair. Although she does have a better assortment of hats.” Why does the real-life princess-to-be have so many chapeaus? It’s not just a signature look, like Blair’s headbands, nor is she trying to cover a bald spot. Hats are de rigeur at English weddings, which is why ladies turn up with Dr. Seuss-like ribbon explosions on their heads.