Mrs. Obama is enjoying much better approval ratings than her husband, Forbes reports. Hers hovered around 70 percent, while President Barack Obama鈥檚 are below 40 percent. She has used her high profile to champion her pet cause of ending childhood obesity and this year, in tandem with the US Department of Agriculture, she unveiled MyPlate, which revamps the way people assess the nutritional standards of a meal. Last year, Michelle Obama was Forbes鈥 most powerful woman.

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First Lady Michelle Obama and her daughter Sasha (l.) walk toward waiting vehicles, following a bicycle ride in Manuel F. Correllus State Forest in West Tisbury, Mass., on the island of Martha's Vineyard, Tuesday, Aug. 23.