Officially sworn in as Singapore’s eighth president, Halimah Yacob, 63 has become the first female president in the history of Singapore after successfully filling her nomination papers while obtaining the support of the Singapore's Prime Minister Lee Hsien Loong.In a speech, Lee described Halimah as a respected unionist who championed the employment and well being of union members and workers and also their family members, especially for women who are returning to work.