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“Hope for Haiti” airs later tonight, and the array of stars signed up to help the island nation devastated by an earthquake is growing by the hour.

The two-hour telethon, which will air on every major network and dozens upon dozens of other stations across the U.S. and around the world, is being hosted by George Clooney in Los Angeles, Haiti native Wyclef Jean in New York, and Anderson Cooper from Haiti.

So who will you see tonight?

Among those signed up so far are Brad Pitt, Julia Roberts, Tom Hanks, Bill Clinton, Meryl Streep, Leonardo DiCaprio, Clint Eastwood, Nicole Kidman, Robert Pattinson, Jon Stewart, Ellen Degeneres, Matt Damon, and Morgan Freeman, to name just a few.

And the fundraiser has attracted a number of major artists who will be performing as well. That list includes, Madonna, Bruce Springsteen, Beyonce, Taylor Swift, Justin Timberlake, Christina Aguilera, Bono, The Edge, Jay-Z, Rihanna, Sting, Jennifer Hudson, Sheryl Crow, Kid Rock, Keith Urban, Stevie Wonder, Alicia Keys, Dave Matthews, John Legend, Shakira, Mary J. Blige, and Coldplay.

The music will be available, beginning Saturday, on iTunes and all the proceeds will go to the charities benefiting from the telethon, including the Red Cross, UNICEF, Oxfam, Partners in Health, and Wyclef’s Yele Haiti Foundation.

Gossip Cop would like to know if you’ll be watching (and hopefully giving). We are! 

Be sure to follow @GossipCop on Twitter for updates, and visit GossipCop.com for the MOST accurate celebrity reporting!

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According to Taylor Lautner’s rep, the “New Moon” heartthrob will not be participating in the “Hope for Haiti” telethon.

But something that should be music to your ears is the long list of musicians who will be performing during the two-hour fundraiser, which is being aired on every major network and numerous other cable outfits.

In New York, where Haiti native Wyclef Jean will host the show, there will be performances by Bruce Springsteen, Jennifer Hudson, Shakira, Mary J. Blige, Sting, and Jean himself.

Co-host George Clooney will be in Los Angeles, where Taylor Swift, Dave Matthews, Sheryl Crow, Kid Rock, Christina Aguilera, Keith Urban, Stevie Wonder, Alicia Keys, John Legend, and Justin Timberlake are slated to perform.

And Bono, The Edge, Jay-Z, Rihanna and Coldplay will hit the stage in London, where Robert Pattinson will lend a helping hand as well.

The music will be available, beginning Saturday, on iTunes and all the proceeds will go to the charities benefiting from the telethon, including the Red Cross, UNICEF, Oxfam, Partners in Health, and Wyclef’s Yele Haiti Foundation.

Additionally, the event will feature dozens and dozens of big stars manning the phones, and Anderson Coooper reporting from Haiti.

UPDATE – 7:30 PM –

The list of celebs who will be answering phones is still developing. Ellen DeGeneres has signed on, with many, many others rumored. Gossip Cop will monitor…

Follow @GossipCop on Twitter, and visit GossipCop.com for updates on “Hope for Haiti”

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Madonna has joined other celebrities like Brad Pitt and Angelina Jolie, who have used their fame and fortune to help those devastated in Haiti by Tuesday’s 7.0-magnitude earthquake. The disaster claimed 45,000 to 50,000 lives, according to the Red Cross, which just received a reported $1.5 million from model Gisele Bundchen.

Today, Madonna announced she donated $250,000 to Partners In Health, a health care provider in Haiti.

In a statement, 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.”

And to help support Haiti, Madonna asked friends and the general public “to join me collectively to match my contribution or give in any way you can.”

She added, ”we must act now.”

And we must. 

Next week, Hollywood will come together to help Haiti in a telethon, being organized by George Clooney, that’s going to air on the MTV networks, NBC, ABC, HBO, and CNN.

Be sure to follow @GossipCop on Twitter for updates, and visit GossipCop.com for the MOST accurate celebrity reporting!