The veteran star, best known for his portrayal of scheming oil baron J.R. Ewing in the original version of the soap opera, which ran from 1978 to 1991, passed away at a hospital in Texas after suffering complications from his battle with cancer.
His long serving Dallas co-stars Linda Gray, Patrick Duffy, Victoria Principal and Ken Kercheval paid tribute to the actor after news of his death emerged - and now several of his co-stars on the revamped show have also spoken out about the tragedy.
Brenda Strong tells E! News, "Being able to work with one of my childhood idols was a dream come true. He was one of the most resilient and positive people I've ever known. Larry's tremendous talent and contribution as an artist is only surpassed by his gigantic heart and how beloved he was by his friends, especially Patrick and Linda.
"He is a one of a kind and will be deeply missed. My heart breaks for his family's loss. Quite honestly, I can't believe he is gone. He lived life to the fullest and was the embodiment of the term 'light hearted.' He was and will continue to be an icon in our hearts and minds."
In a series of posts on his Twitter.com page, Jesse Metcalfe writes, "It was truly an honor to share the screen with Mr. Larry Hagman. With piercing wit and undeniable charm he brought to life one of the most legendary television characters of all time. But to know the man, however briefly, was to know a passion and dedication for life and acting that was profoundly inspirational. My deepest condolences go out to Larry's friends and family. He will most certainly be missed."
Leonor Varela added, "I am grateful to have shared a few moments in life and on screen with Larry Hagman, you inspire me to love life and appreciate every moment", while Jordana Brewster lamented, "I feel lucky and humbled to have worked with such a great man and actor. We will miss you, Larry."
Felicity Huffman, who shared the small screen with Hagman in a 2011 episode of Desperate Housewives, has also been stunned by the loss, writing on her Twitter page, "Just came down to civilization and heard about Larry Hagman, rest in peace. What a wonderful actor, honored to have worked with him", while John Cusack adds, "RIP Larry Hagman. Great actor and a really good man - had the pleasure (of) knowing him just a bit - always left smiling."
Joan Collins reminisced about working with Hagman on 1970 movie Up in the Cellar and admits he inspired her iconic Dynasty character Alexis Colby. She states, "Oh no just heard about Larry, he was magnificent as JR & inspired me to play Alexis. RIP. Yes I played Larry's wife in 'Up in the cellar'. He was a lot of fun..."
Meanwhile, Hagman's daughter Heidi Kristina took to her Facebook.com page to detail her father's last moments: "Our whole family was with him. It was a loving and beautiful way to leave us."