The Prince of Wales and The Duchess of Cornwall are deeply saddened to hear of the death of Joan Rivers, a Clarence House spokesperson said.
Prince Charles said:
Joan Rivers was an extraordinary woman with an original and indefatigable spirit, an unstoppable sense of humour and an enormous zest for life.
She will be hugely missed and utterly irreplaceable.
Joan Rivers was a guest at Charles and Camilla's wedding in 2005 and performed for at the "We Are Most Amused" comedy gala, in aid of The Prince's Trust, for the Prince of Wales' 60th birthday.
Here are 10 of the sharpest one-liners from Joan Rivers, who has died aged 81.
Stars have paid tribute to comedian Joan Rivers as fans lay flowers on her Walk of Fame star and comedy venues show their respect.
A pioneer in the world of comedy, Joan Rivers carved a career with her tenacity and an acid tongue that spared no-one - including herself.