A telethon to raise money for the victims of the havoc ravaged by Hurricanes Harvey and Irma will air Tuesday night from 8 to 9 PM EDT and is set to be one of the biggest telethons ever.

The celebrity lineup for the event boasts several high-profile names including Al Pacino, Drake, Justin Timberlake, Demi Lovato, Travis Scott, Dave Matthews, Jon Stewart, Billy Crystal, Chris Paul, Robert De Niro, and Leonardo DiCaprio.

The show, which includes celebs manning the phones and making donations, will be live from Los Angeles, New York City and Nashville, and include live performances.

Michael Dell, founder and CEO of Dell Technologies (DELL) , and Verizon (VZ) are said to be underwriting the entire event, ensuring that 100% of the collected money is donated to the hurricane victims, TMZ reports.

Dell will match the first $10 million, and Apple (AAPL) will give $5 million.

CBS, NBC, ABC, and FOX will all carry the show live, as will 17 other networks and platforms including MTV, BET, Bravo, HBO, Facebook (FB) YouTube and Twitter (TWTR) , TMZ reported.

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