Comedian Kathy Griffin announced on Instagram and Twitter late Tuesday evening that her mother, Maggie, died.
"I am gutted," Griffin wrote on Instagram. "She was my best friend. She was my family. You knew her. She appreciated you guys so much. I'm shaking. I won't ever be prepared."
Griffin, 59, starred alongside her mother on many TV shows and projects including "Kathy Griffin: My Life on the D-List" and "Kathy."
"Her point of view. So unique. We just GOT each other," Griffin said. "I'm so grateful you got to be part of her life. You loved her. I know it. She knew it. She's irreplaceable."
The Emmy and Grammy Award-Winning comedian went on to describe how she wasn't coping with the news well and said, "I'm telling you right now, I am not doing well with this. I'm rambling now. Sorry. It truly feels like the end of an era. Oh, and OF COURSE she went on St Patrick's Day."