Joan Rivers died Thursday at age 81.
Celebrities, actors and comedians took to Twitter Wednesday afternoon to offer their condolences and memories.
I love this ballsy, funny, generous, shrewd, unpredictable and loyal woman. I grew up in awe of her as she filled in for Carson and pinched myself when I co-starred in a pilot with her for Bravo in '06. She went on to appear on WWHL many times, showing up in the middle of the night with a great attitude and a slew of new jokes. And this summer Michael Rourke and I developed a show with her, starring her, that we were in the middle of pitching networks. She was so indomitable we all thought she would live forever. Joan was a trailblazer and an indelible part of pop culture.