Blake Lively reacts to 'Gossip Girl' costar Michelle Trachtenberg's tragic death

Blake Lively is paying emotional tribute to her Gossip Girl co-star Michelle Trachtenberg following her sudden death on Wednesday.

Taking to her Instagram Stories, the It Ends with Us actress posted a photo of her first meeting with Michelle.

“This is the first day I met Michelle,” she began her lengthy post. “She was electricity. You knew when she entered a room because the vibration changed. Everything she did, she did 200%.”

“She laughed the fullest at someone’s joke, she faced authority head-on when she felt something was wrong, she cared deeply about her work, she was proud to be a part of this community and industry as painful as it could be sometimes,” continued the 37-year-old actress.

In the post, Blake described Michelle as "fiercely loyal to her friends and brave for those she loved."

"And she always had yummy caramel smelling lip gloss on because she didn’t just want to sparkle on camera, she liked creating a nice experience for anyone who was in her orbit, even down to the subtle smell of her lip gloss because she cared about the sweet details," wrote the Age of Adaline star.

Concluding the post, Blake penned, “The world lost a deeply sensitive and good person in Michelle. May her work and her huge heart be remembered by those who were lucky enough to experience her fire.”

For those unversed, Michelle was found unresponsive in her NYC apartment on February 26. As per the latest report, the actress died due to cardiac arrest.