Colombian pop star and UNICEF ambassador, Shakira, dances with children from the Max Payne Hand in Hand School for Bilingual Education during her visit to the school in Jerusalem

Colombian pop star and UNICEF ambassador, Shakira, smiles at children from the Max Payne Hand in Hand School for Bilingual Education during her visit to the school in Jerusalem

Colombian pop star Shakira hugs students of Loma del Peye, a new school under construction, in Barranquilla

Pop singer Shakira poses with the ILO (International Labour Organisation) medal for her support for Social Justice for Peace through her foundation during a ceremony in Geneva March 3, 2010.

U.S. first lady Michelle Obama (L), her mother Marian Robinson (back facing camera), daughters Malia (2nd L) and Sasha (3rd L), nephew Avery Robinson (4th L), and niece Leslie Robinson dance with children and caretakers as they visit the Emthonjeni Community Center in Zandspruit Township, Johannesburg, June 21, 2011. U.S. first lady Michelle Obama paid a visit to former South African President Nelson Mandela on Tuesday, kicking off her own symbolic trip to Africa by meeting one of the continent's most revered leaders.

Michelle Obama in S. Africa

United Nations High Commissioner for Refugees Goodwill Ambassador Angelina Jolie (2nd R) greets Syrian refugees as she visits a refugee camp in the southern Turkish town of Altinozu in Hatay province, June 17, 2011.

Hollywood actress Angelina Jolie takes notes during a visit to Bella refugee camp in Ingushetia, near the border with Chechnya, August 22, 2003.

United Nations High Commissioner for Refugees Goodwill Ambassador actress Angelina Jolie with Executive Director of Islamabad's Pakistan Institute of Medical Sciences, Syed Fazle Hadi talks with a earthquake victim during her visit to a hospital in Islamabad, November 25, 2005.