India, Feb. 27 -- Blake Lively has paid tribute to her late Gossip Girl co-star, Michelle Trachtenberg, who passed away at the age of 39. Lively, 37, shared an emotional message on her Instagram Story, recalling Trachtenberg's vibrant personality and deep impact on those around her.

Posting a throwback image from Gossip Girl, Lively recalled the first day she met Trachtenberg. "She was electricity," she wrote. "You knew when she entered a room because the vibration changed. Everything she did, she did 200%."

Lively fondly described Trachtenberg's unwavering dedication, saying, "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 also highlighted ...