Brad Pitt, Robert Pattinson Sign On for Haiti Telethon

 Kevin Mazur/WireImage for UNICEF; Lester Cohen/

Brad Pitt is lending a hand to pal George Clooney — by signing on to participate in his Hope For Haiti Now telethon.

This isn't the first time the star, 46, has reached out to the embattled island. He and Angelina Jolie donated $1 million to Doctors Without Borders for the organization's emergency medical operations last week.

Robert Pattinson, Halle Berry and Nicole Kidman have also agreed to appear during Friday's fundraiser, to air on networks including NBC, CBS, ABC, CNN and MTV.

The telethon — which will be anchored by Clooney in Los Angeles, Wyclef Jean in New York City and CNN's Anderson Cooper reporting live from Haiti — will also include performances by Beyonce in London and Madonna in NYC. (It was announced Wednesday that Christina Aguilera and Justin Timberlake will also perform.)

Others who have signed on include President Bill Clinton, Ben Stiller, Chris Rock, Clint Eastwood, Denzel Washington, Jon Stewart, Leonardo DiCaprio, Matt Damon, Meryl Streep, Morgan Freeman, Samuel L. Jackson, Tom Hanks and Will Smith.

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Proceeds from the two-hour Hope for Haiti Now event will benefit The Clinton Bush Haiti Fund, United Nations World Food Programme, Oxfam America, Partners in Health, the Red Cross, UNICEF and Yele Haiti.

Hit by a 7.0 magnitude earthquake Jan. 12, the people of Haiti experienced a 6.1 aftershock Wednesday near Port-au-Prince. An estimated 200,000 people are dead, 250,000 injured and 1.5 million homeless as a result of the quake.

Find out how you can help at the Red Cross (text "Haiti" to 90999 to donate $10 to the organization).

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