Rivers, 81, had been on life support in Mount Sinai
Hospital since having a cardiac arrest in New York
last week.
In a statement, her daughter Melissa said she died
surrounded by family and friends, and she thanked
hospital staff for their "amazing care".
The comedian, best known for her lacerating wit,
stopped breathing during a procedure on her vocal
cords at an outpatient clinic last Thursday.
"My mother's greatest joy in life was to make people
laugh," said Melissa Rivers.
"Although that is difficult to do right now, I know her
final wish would be that we return to laughing soon."
The actress and stand-up comedian is well known for
her legendary put-downs and has more recently
turned her razor-sharp tongue on the red carpet's
worst dressed celebrities, hosting the E! network's
Fashion Police.
Both Rivers and Melissa, her only child, have
appeared together in reality TV show Joan & Melissa:
Joan Knows Best?

Omg I just saw this news..its so sad! I watched a few of her shows and I gotta say the woman is really funny. RIP Joan Rivers. Many will miss u. I hope she made her ways right with her Creator cos thats the most important thing

RIP to her although i didnt like her when she was Alive.

RIP... Dont know her though