The wife of New England Patriots quarterback Tom Brady "was so moved, she knew she had to do what she could to help," a source close to the supermodel tells PEOPLE, adding that on Thursday Bündchen donated $1.5 million to the Red Cross.
Bündchen, who reportedly earned $35 million last year, was inspired to help after seeing the catastrophic damage done by the 7.0-magnitude earthquake that struck earlier this week, the Boston Globe reported.
"I am heartbroken by the catastrophic events of the past six days in Haiti," Bündchen said Friday. "It is important in times like these that we come together and find ways to help in any way we can."
Singer Wyclef Jean, a native of Haiti, is raising money for relief for the victims. He told Fox News Channel's Bill Hemmer that the scene on the ground in Port-au-Prince resembles the "apocalypse" and disaster recovery will cost millions.
"We have to raise a million dollars a day. In four or five days, this whole country is going to be in chaos," Jean said on Fox's Special Report with Bret Baier. "We are calling for a state of emergency. Please, President Obama, Secretary of State Hillary Clinton – we have to do something for this country."
Meanwhile, George Clooney is set to host a telethon Jan. 22 to raise money for the battered Caribbean nation. The MTV channels worldwide along with ABC, NBC, HBO and CNN are all going to air the fundraiser.
In a statement released Friday, Madonna sent her best wishes – and pledged $250,000 toward relief efforts. "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," she said. "I have given a donation of $250,000 to assist Haiti's earthquake victims through Partners in Health, one of Haiti's leading health-care 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."
Angelina Jolie and Brad Pitt already vowed to give $1 million to Haiti earlier this week, contributing the money to Doctors Without Borders. And the Hollywood Foreign Press Association, which organizes the Golden Globe awards, said it would donate $100,000 to the earthquake-ravaged country.
Magician David Blaine, who shot a TV special in Haiti in 1999, is working with the Red Cross to raise funds for Haitian earthquake victims by performing his street magic for 72 hours non-stop, starting Friday at 9 a.m. in Times Square.
Twitter SupportA host of celebs have been Tweeting about their plans to donate:
Ben Stiller has been raising money for Save the Children's Ceverine Community School Project in Haiti and Tweets that "people in Haiti need our help and attention right now."
The Office star Rainn Wilson urges fans to give more than $100 to Planting Peace in Haiti. "I'll send you a personalized, signed foto!"
Actress Alyssa Milano Tweeted, "I just donated $50,000 to UNICEF for Haiti relief. Which corporation will match my donation?"
Maxwell wrote on Twitter that he was present at a meeting with former President Bill Clinton about ways to help Haiti.
Blink 182 lead singer Mark Hoppus Tweeted about selling Haiti-relief T-shirts, with all proceeds going to the Red Cross.
Comedian Jimmy Fallon and singer John Mayer have encouraged people to donate to Haiti via text.
Adam Lambert, Paris Hilton and Lindsay Lohan have also taken to Twitter to pledge to give money to Haiti.
Reporting by ELIZABETH LEONARD, CHARLOTTE TRIGGS, ALEXIS CHIU, PAUL CHI, JOEY BARTOLOMEO AND JESSICA HERNDON