Madonna, Gisele, Matt & George Open Hearts, Wallets to Haiti

Stars align to offer relief, encourage others to do the same by matching donations or giving what they can for devastated earthquake victims

Celebrities aren't only teaming up to encourage Americans to help relieve the earthquake-devastated Haitians, they're also leading by example, with several stars reaching deep into their pockets to offer some substantial aid.

Dollar for dollar, Gisele Bündchen led the way, proving she's not only a supermodel but a supergiver, personally donating $1.5 million to the Red Cross' relief efforts. According to the Boston Globe, Bündchen wrote the check after witnessing the catastrophic destruction the Caribbean nation suffered this week.

Madonna, too, joined the increasing list of star donors, handing over $250,000 to Partners in Health, one of Haiti's leading healthcare providers.

"My prayers are with the people of Haiti," she said. "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 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."

Among the celebs also heeding the call: George Clooney, Matt Damon, Ben Stiller, Alyssa Milano and Wyclef Jean, to name just a few.

For his part, original bell-sounder Clooney is continuing apace with his plans to organize a cross-network celebrity telethon next Friday to raise more money for his relief effort, which now has a name: Hope for Haiti.

E! will join ABC, CBS, NBC, Fox, CNN, BET, CW, HBO, MTV, VH1, CMT, the Style Network and the National Geographic Channel in airing the global telethon, which will run for two hours and be broadcast from Los Angeles, New York and Haiti starting at 8 p.m. ET/PT. All donations will directly benefit Oxfam America, Partners in Health, Red Cross, UNICEF and Wyclef's Yéle Haiti Foundation.

Clooney himself has already gotten into the spirit of giving: Not On Our Watch, the charity organization founded by himself, Don Cheadle, Matt Damon, Brad Pitt and Jerry Weintraub, today donated $1 million in emergency response funds to be used to provide much-needed medical services to victims of the quake.

"The people of Haiti are in desperate need of our help," the generous founding fathers said. "Our organization, Not On Our Watch, will do whatever it can and we know the international community will as well."

As will a community a little closer to home. On last night's Tonight Show, Conan O'Brien took time out from talking about his own "silly" troubles to address the crisis in Haiti, and announced that Ben Stiller's looks-like-a-joke-but-isn't charity Stillerstrong has, for the immediate future, redirected all donations made to his organization to the emergency relief effort.

"It's heartbreaking to see the images coming out of Haiti," Stiller said. "The people there need our immediate help. I was there last year for the first time, and was struck by the amazing spirit and culture of the people and place, and the extreme hardship these people have lived with—and that was before the recent tragedy."

In addition to the temporary redistribution of the charity's funds, Stiller is also working with Save the Children on a special project to build a school in Ceverine—or, as he put it, "Stillerstrong, stealing great ideas from other charities to build a school in Haiti."

As for Milano, the actress and UNICEF Goodwill Ambassador took to the Huffington Post to detail her own creative plan of action.

"I felt completely helpless," she said of her reaction to watching the horrific news unfold. "I cried, and then I did the only thing I could do…I wrote a check to the U.S. Fund for UNICEF for $50,000. But I woke up this morning feeling that this wasn't enough."

So she took to Twitter and posted the following "Tweet Challenge": "I just donated $50,000 to UNICEF for #Haiti relief. Which corporation will match my donation?"

"100% of every dollar will go directly to supplies that include tarpaulins, water-purification tablets, oral rehydration salts, family water kits, medical supplies, medical kits, food, shelter and protection," she wrote on HuffPo.

Comcast (aka the E! mothership) has stepped up with a $1 million check.

Meanwhile, Ryan Seacrest, Maya Angelou, Lenny Kravitz, Terrell Owens, Landon Donovan, Asher Roth, Ryan Cabrera and E!'s own Jason Kennedy are among the celebs joining forces for Save Haiti Saturday.

The nationwide effort will attempt to raise money for Project Medishare, an organization that has been providing medical relief and supplies for earthquake victims, and asks for donations from individuals as well as businesses. The group is asking any company that can to donate a portion of its Saturday revenue to the effort.