"A legend, a friend, a mentor, an icon, and wildly funny. One of a kind. RIP #JoanRivers," wrote Kathy Griffin.
"I enjoyed the Bieb's movie. It's very sweet," comedian Kathy Griffin said. "It talks about his weeks of struggle. This is an artist who has really been at this for days. Weeks and weeks of struggle, so gosh, I am pulling for him. If only he could have a modicum of success."