Stefania and Kristen pose with the UN's Director of Partnerships, Amir Dossal, and his wife, Tas. Director Dossal's office helps oversee the UN's Haitian relief effort which was the beneficiary of the 2010 Opera Ball.
Stefania and Kristen smile with cadets from the US Military Academy at West Point.
The girls hang out with American Idol contestant and the lead star in Broadway’s "Rock of Ages" Constantine Maroulis!
Stefania was an honored guest and posed with the Ball's hosts, Broadway and film star Geoffrey Holder and his wife, classical dancer Carmen De Lavallade.
Stefania poses with other guests at her table enjoying the Viennese Opera Ball.