Answer: faddist

AnswerCrossword Clue
FADDISTBeanie Baby collector, e.g.
FADDISTFollower of crazes.
FADDISTFashion follower
FADDISTOne embracing a craze
faddistperson following a fad or given to fads, as one who seeks and adheres briefly to a passing variety of unusual diets, beliefs, etc.
faddista faddish person