Fashions, fads (6)
I believe the answer is:
trends
This clue is a double definition.
'fashions' is the first definition.
(I've seen this before)
'fads' is the second definition.
(I've seen this in another clue)
(Other definitions for trends that I've seen before include "Fashion directions or continuing tendencies" , "Current movements, in fashion say" , "Current movements in styles, tastes etc." , "Prevailing styles, fashions" , "Continuing tendencies or general directions" .)