Blake Lively is taking a trip down memory lane!

The 38-year-old actress took to Instagram on Sunday (September 21) to celebrate the 18th anniversary of one of her most popular projects – Gossip Girl , which first debuted on The CW on September 19, 2007.

“the summer gossip girl turned 18…” Blake began her caption. “This show was my college. It was my education, my social life, my hardwork, my late nights and early mornings, my teacher. New York City and Silvercup Studios (& sometimes Paris ✨) was my campus for SIX years.”

“So many memories. What. A. Decade. 💖 What a University,” she added.

Throughout the photo dump of behind-the-scenes photos were images of her with co-stars like Chace Crawford , Ed Westwick , Leighton Meester , Penn Badgely and the late Mic

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