Millinery

[Becky]

The articles made or sold by milliners, as headdresses,
hats or bonnets, laces, ribbons, and the like.

[Kai]

Originally deriving from Milliner, which comes from Milaner as an inhabitant of [Milan], Italy.
Technically means the art of designing womens hats or adding unnecessary [bells and whistles] to mens suit jackets.
Used to define something as unnecessary, [too fancy] and annoying in its superfluous orientation to useless details.

[PussyCat]

the hats and other goods that are sold by a milliner