On Saturday, July 6, Disney Channel star Cameron Boyce passed away at just 20 years old. As news of his untimely death broke, tons of supportive messages and tributes poured in from Cameron’s costars, fans and fellow celebrities.

Cameron’s Grown Ups and Grown Ups 2 costar Adam Sandler (who played Cameron’s onscreen dad) shared a very heartfelt tribute on Twitter. “Too young. Too sweet. Too funny. Just the nicest, most talented and most decent kid around. Love that kid,” Adam, 52, wrote in his message on Twitter. “Cared so much about his family. Cared so much about the world. Thank you, Cameron, for all you gave to us. So much more was on the way. All our hearts are broken. Thinking of your amazing family and sending our deepest condolences.”

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Skai Jackson, who played Cameron’s younger sister on the Disney Channel TV series Jessie, also shared a very emotional tribute. “I don’t even know where to start … I am at a loss for words. I never thought in a million years I would be writing this,” the 17-year-old wrote on Instagram. “Cam, you were one of a kind. My heart will be forever broken. I am so happy that I got to spend almost every day with you on set, you gave the best hugs. I wish I would have hugged you tighter when I saw you a couple of months ago. Thank you so much for being the big brother I never had … I am so distraught and I cannot stop crying! I love you so much … fly high 👼🏼 💔😢 Gods best Angel. #CameronBoyce.”

Charles Esten, who played Skai and Cameron’s TV dad on Jessie, sent his condolences to the Boyce family. “My family and I are devastated today, by the loss of our young and amazing friend, Cameron Boyce. Years before I was blessed to play his father on Jessie, we were blessed to know him and his wonderful family at the elementary school our kids all attended together. It was there we were introduced to his endless talent, kindness, and joy for living. At his very 1st talent show, little Cameron’s dancing lit up the stage, and left everyone on their feet, cheering. It was clear to all that he was destined to be the star he would soon become,” Charles, 53, wrote on Twitter. “And yet, Cameron never carried himself with anything but kindness, humility, effortless grace, and great humor. Even as his star ascended with Jessie, and he began to receive the type of fame that can change people, I never saw that change. Not even a little. It was a joy to work with him on Jessie, as it was with all the wonderful young stars of that beloved show. They were as close as actual brothers and sisters to one another, and still are, and my heart breaks for them today. Our love and heartfelt prayers go out to them, and most especially, to the Boyce family. Your Cameron was a blessing to us, as he was to so many others in this world. May you feel the breadth of love being poured out for him today, and may God comfort you as you mourn.”

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Michael Tullberg/Getty Images

And Cameron’s fellow Disney alum, Gregg Sulkin, also shared a sweet tribute. “Heartbroken. Lost for words. I had known Cameron Boyce for many years. He was always polite. Always respectful and always a class act. In fact I was going to message him a couple weeks ago to tell him that I wanted to be in each other’s lives more,” the former Wizards of Waverly Place star, 27, wrote on Twitter. “Now I wish I had sent that message. Just so he personally knew how highly I thought of him and how much admiration I had for him. My heart goes out to his family & his close friends. Cameron, you were and still are a star. May god bless you in heaven. You will be missed down here.”

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