An impressive list of celebrities will be on that telethon tonight to raise money for the victims of Harvey AND Irma.  

They include . . .

Justin Bieber, Drake, Reese Witherspoon, Jamie Foxx, Blake Shelton, Billy Crystal, Robert De Niro, Sofia Vergara, Michael Strahan, Tim McGraw, Faith Hill . . .

Al Pacino, Justin Timberlake, Travis Scott, Dave Matthews, Jon Stewart, Chris Paul, Demi Lovato, Diddy, and Leo DiCaprio.

The show airs live from L.A., New York, and Nashville, from 8:00 to 9:00 P.M. Eastern, and it won't be hard to find.  In addition to ABC, NBC, CBS, and Fox, it's airing on more than a dozen other networks, including MTV, BET, and CMT.

It'll also be on Facebook, Twitter, and YouTube. 

(TMZ)