Beyonce and Madonna have been added as performers to Friday’s multi-network “Hope for Haiti Now” telethon, and Denzel Washington, Brad Pitt, Leonardo DiCaprio and former President Bill Clinton are among the participants.

Justin Timberlake, Coldplay, Alicia Keys, Bruce Springsteen, Wyclef Jean, Bono, The Edge and Jay-Z will also lead the all-star lineup of performers for Friday night’s “Hope for Haiti Now: A Global Benefit for Earthquake Relief” telethon. More than 100 stars have signed on to help raise funds for the MTV Networks-sponsored show, which will benefit the victims of last week’s devastating 7.0-magnitude earthquake on the impoverished island.

A statement released Thursday said Beyonce would perform from London, and Madonna from New York City. The list of musical performers already includes such heavyweights as Jay Z, Wyclef , Jennifer Hudson, Mary J. Blige, Shakira and Sting, while the Los Angeles show will feature performances from Alicia Keys, Christina Aguilera, Dave Matthews, John Legend, Timberlake, Stevie Wonder and Taylor Swift.

“It’s a big world out there, and we all have a lot of responsibility to look out for people who can’t look out for themselves,” telethon organizer George Clooney said in an MTV interview that aired Thursday night. “So what we can do is first and foremost, raise money. Period. That’s it …

“If I thought we could all pick up shovels and go in there and help without being in the way, I think a lot of people would do that.”

An estimated 200,000 people were killed after a powerful earthquake struck Haiti last week, devastating the nation.

The two-hour program will air commercial-free across ABC, CBS, NBC, FOX, CNN, BET, the CW, HBO, MTV, VH1 and CMT on Friday at 8 p.m. ET/PT. The special will also air on PBS, TNT, Showtime, Comedy Central, Bravo, E! Entertainment Network, National Geographic Channel, Oxygen, G4, Centric, Current TV, Fuse, MLB Network, Epix, Palladia, SoapNet, Style, Discovery Health and Planet Green, as well as Canada’s CTV, CBC Television, Global Television and MuchMusic. It will also air internationally on BET International, CNN International, National Geographic and MTV Networks International, available in 640 million homes worldwide. “Hope for Haiti” will be the first U.S.-based telethon airing on MTV in China. Facebook and Twitter are the official social media partners who will help to drive donations and tune-in to the telethon.

People can begin donating even before the start of the 8 p.m. EST concert via phone and text. Viewers can also download musical performances from the show via iTunes for 99 cents. Those profits will also be donated to Haiti relief.

Also Thursday, DiCaprio announced he was donating $1 million to the Clinton-Bush Haiti Fund, the relief effort led by former Presidents Bill Clinton and George W. Bush and one of the organizations benefiting from the telethon.