A 20-year-old dancer from Japan was crowned Miss Universe 2007 on Monday night, marking only the second time her country has won the world beauty title. Dressed in a black, red and purple Japanese-style gown, Riyo Mori nervously grabbed the hands of first runner-up, Natalia Guimaraes of Brazil, just before the winner was announced. Then she threw her hands up and covered her mouth, overcome with emotion.