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Katie Holmes, Jennifer Garner, Natalie Portman

Jason Merritt/Getty Images; Jordan Strauss/Getty Images North America; Steve Granitz/WireImage.com

Talk about a power lunch.

Katie Holmes, Jennifer Garner and Natalie Portman are among those who will be honored for their philanthropic work at Variety's upcoming second annual Power of Women Luncheon.

Also being feted are Diane Lane, Amy AdamsEva Mendes and Management 360's Suzan Bymel.

The event is held in conjunction with the release of the trade magazine's annual Women's Impact Report. Presented by Lifetime Television and Lifetime Movie, the afternoon soiree takes place Sept. 30 at the Beverly Hills Hotel.

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Check out more philanthropy in our Do-Gooder photo gallery.