All white on the night! Debutantes dazzle as they are introduced into society at the Vienna Opera Ball, while Brooke Shields attends as the date of Austrian billionaire Richard Lugner, 83.

As far as glamour goes, the Vienna Opera Ball is up there with the BAFTAs and the Met Ball.

The glittering gala is one of the most exclusive events in the Viennese social calendar and every year, Austria's most important men and women descend on the Wiener Staatsoper in Vienna, to rub shoulders with stars like Kim Kardashian and Hilary Swank.

To kick-start the festivities, 186 debutantes and their partners dance the opening waltz, under the watchful gaze of the older guests, which this year included Hollywood star Brooke Shields, 50, who attended the glamorous gala on the arm of Austrian businessman Richard Lugner, 83.