Singer Aubrey O'Day attends the opening night gala for Mandarin Oriental, Las Vegas at CityCenter December 4, 2009 in Las Vegas, Nevada. The 47-story nongaming luxury hotel and condominium tower is the third part of the 67-acre, USD 8.5 billion mixed-use urban development center to open. The joint project between MGM Mirage and Dubai World is said to be the biggest privately financed construction project in United States history and one of the world's largest green projects being built with the Leadership in Energy & Environmental Design (LEED) Gold certified Green Building Rating System.
( - Source: Ethan Miller/Getty Images North America)
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