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Gwyneth Paltrow, Reese Witherspoon, Jennifer Aniston, Stand Up 2 Cancer

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Gwyneth Paltrow, Reese Witherspoon, Jennifer Aniston and more stars could be calling you soon!

Stand Up to Cancer—which has raised $261 million to date—is entering its fourth charitable year, and when Hollywood hits the phone banks on Sept. 5, you may not have to wait on hold to speak with your favorite celebs.

The fundraiser isn't asking for much for you to get the message, "Thank you for standing up with us!" via a personal phone call (or through Twitter and Facebook) from a famous face.

The telethon just requires you to sign up with your name, email address, social media handles and, of course, your seven digits. Describe your connection to cancer, and invite your friends along for the philanthropic fun.