Pictures of Gisele Bundchen at the UN MDG Summit Kickoff 2010-09-21 07:00:00

Gisele Leaves Ben at Home to Switch Into Earth Mother Mode

Gisele Bundchen brought lots of energy to NYC's Museum of Natural History, where she helped the UN kick off its Millennium Development Goals Summit last night. In her role as UN environmental ambassador, Gisele has been vocal about her thoughts on saving energy and getting young people involved in saving the planet. She brought her peace signs and big smiles after the event to the fifth Important Dinner for Women at the Mandarin Oriental Hotel. Gisele made the social rounds without her football-player husband or son Benjamin, who was treated to his mother's funny faces over the weekend during a too-cute outing to Central Park.

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Source: Getty