(AP Photo/Denes Erdos) VIENNA (AP) — The aristocrats of the Habsburg royal court who danced in the first of Vienna ’s famed balls in the 18th century could never have imagined how the hallmark ... and ...

VIENNA — (AP) — The aristocrats of the Habsburg royal court who danced in the first of Vienna 's famed balls in the 18th century could ... ladies must don evening gowns. Many attendees rent ...

The aristocrats of the Habsburg royal court who danced in the first of Vienna 's famed balls in the 18th century could never have imagined how the hallmark of the Austrian capital's social and ...

Dating back to the 18th century, the dress codes have always remained strictly enforced, with men required to wear tailcoats or tuxedos. Elsewhere, ladies must don elegant evening gowns.