Madonna has announced she has donated a quarter of a million dollars to help victims of the earthquake in Haiti.
The superstar said her "prayers" were with people affected by the disaster.
And she called on friends and fans to make cash contributions to help with the relief effort.
In a statement on Friday, Madonna said: "My prayers are with the people of Haiti. I can't imagine the terrible pain and suffering they are experiencing.
"Sadly, the depths of the tragedy are just becoming known and the need for our support grows more urgent with every passing moment.
"I have given a donation of $250,000 to assist Haiti's earthquake victims through Partners in Health (www.pih.org), one of Haiti's leading healthcare providers.
"I urge all of my friends and fans around the world to join me collectively to match my contribution or give in any way you can. We must act now. Thank you for your support."
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