From those who'd worked with him to those who'd been inspired and influenced by his work -- or even just entertained by his work -- celebrities have been paying sincere tribute to the late star's work on social media Sunday.
Rose Marie, who shared the screen with Lewis on The Dick Van Dyke Show credited Lewis with helping her get through "one of the worst times in my life."
Carl Reiner revealed that he'd first gotten to see Lewis at work in 1947, when he and Dean Martin first teamed up to share the stage for what would become the legendary comedy troupe, Martin and Lewis.
Dane Cook, who credits Lewis as being his mentor, wrote that he was encouraged by the thought of Lewis finally re-joining Martin.
Others offered condolences to the family and praised Lewis' long-lived career and accomplishments in comedy.