Britain's Prince William and his wife, Catherine, the Duchess of Cambridge, landed in Copenhagen Thursday, on a joint humanitarian mission with the Denmark's Crown Prince Frederik and Princess Mary.

The British royals visited a UNICEF emergency supply centre in Copenhagen to view efforts to distribute emergency food and medical supplies to East Africa, where severe food shortages are affecting more than 13 million people.

Kate Middleton looked stunning in her red, 1970s-inspired, L.K. Bennett coat and belt with black suede knee-high boots. Prince William was photographed tasting a high-energy paste used to treat severe malnutrition during the visit. The royals were also seen wearing hard hats for the UNICEF warehouse visit.

Famine relief efforts in East Africa is believed to be something close to the British royals' hearts, as it was at a secluded log cabin on Mount Kenya, where Prince William proposed to Kate.

We know that when children are malnourished their immune systems are weakened and they become very susceptible to life threatening diseases such as cholera and diarrhea. We need to help these children urgently, said UNICEF UK's Executive Director David Bull.