Actress Mamie Gummer attends the National Geographic Channel "Before the Flood" screening at United Nations Headquarters on October 20, 2016 in New York City.
(October 19, 2016 - Source: Michael Loccisano/Getty Images North America) see more angles »

Mamie Gummer B.o.B

Mamie Gummer sported a classic bob at the screening of 'Before the Flood.'
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