She never thought she was recognized, while all the time she was known to the whole assembly, from the first moment she entered the theatre; they pretended, however, not to recognise her, and some masquerade manoeuvre was always adopted to give her the pleasure of fancying herself incognito.
Louis XVI.

determined once to accompany the Queen to a masked ball; it was agreed that the King should hold not only the grand but the petit coucher, as if actually going to bed.

The Queen went to his apartment through the inner corridors of the palace, followed by one of her women with a black domino; she assisted him to put it on, and they went alone to the chapel court, where a carriage waited for them, with the captain of the Guard of the quarter, and a lady of the palace.

The King was but little amused, spoke only to two or three persons, who knew him immediately, and found nothing to admire at the masquerade but Punches and Harlequins, which served as a joke against him for the royal family, who often amused themselves with laughing at him about it.
An event, simple in itself, brought dire suspicion upon the Queen.

She was going out one evening with the Duchesse de Lupnes, lady of the palace, when her carriage broke down at the entrance into Paris; she was obliged to alight; the Duchess led her into a shop, while a footman called a 'fiacre'.