Alan Thicke died on Tuesday (December 13) after suffering a heart attack while playing hockey with his 19-year-old son, Carter.

The Canadian-born actor, best known for his role as father Jason Seaver on the '80s sitcom Growing Pains, was beloved in Hollywood, and celebrities have paid tribute to the late star all across social media.

His son, singer Robin Thicke, broke his silence early this morning via a touching post on Instagram. He wrote, “My Father passed away today. He was the best man I ever knew. The best friend I ever had. Let’s all rejoice and celebrate the joy he brought to every room he was in. We love you Alan Thicke. Thank you for your love. Love, your grateful son."

Alan's son Carter also addressed his father's death last night, posting a photo of the two to Twitter along with a caption that reads, "Today I lost my best friend and my idol, and the world lost one of it's finest. You are a legend and I love you Pops. Until next time."

Other celebrities like Demi Lovato, Ellen DeGeneres, John Legend, Dane Cook, Bob Saget, Olivia Munn and many more also offered an outpouring of support and kind words about the late Fuller House star on Twitter and Instagram, which you can check out below.

Celebrities We Lost in 2016