Unimportant, silly, useless.
Liable to create the sound of rustling cloth, similar to 19th-century dresses.
Highly ornamented, overly elaborate; excessively girly.
A rustling sound, particularly the rustling of a large silk dress.
To move with the sound of rustling dresses.
Not flattering, attractive or appropriate.
She wore a rather unbecoming hairstyle.
Not in keeping with the expected standards of one's position.
The process by which something unbecomes.