While millions are mourning the loss of the genre-crossing singer and songwriter, many of his famous fans and collaborators -- including his frequent duet partner and dear friend, Dolly Parton -- have taken to social media to express their grief.
"I loved Kenny with all my heart," she shared in a video she posted to Twitter on Saturday morning (March 21). "And my heart is broken. A big ol' chunk of it has gone with him today. I think that I can speak for all his family, his friends and fans, when I say that I will always love you."