Washington, June 21 -- No one arrived in a horse-drawn carriage. But there was valet parking for the guests invited to a "mini-ball" held at the Library of Congress in honor of the Disney film "Cinderella."

The Thursday evening event featured a costumed Cinderella character, who descended the library steps to the cheers of a crowd of children and adults, including some members of Congress and their families.

Before Cinderella made her grand entrance, hundreds watched a screening of the Disney classic animated movie, released 70 years ago. The Library of Congress recently added the film to the National Film Registry.

Attending a brief ceremony to mark the honor were Librarian of Congress Carla Hayden and Mary Walsh, director of the Disn...