““With some difficulty she persuaded the Dauphin, and with no difficulty whatsoever she persuaded his younger brother to take her on a secret visit. From her hairdresser she had heard about "Opera balls"--balls in Paris where the people wore masks and no one knew who anyone else was. So the three royal youngsters ordered a carriage for late at night, dressed up in play costumes which Marie Antoinette got together for them, an drove to Paris. There they went to an "Opera ball.””