Suits and elegant dressed died along with the materials they are generally made of. They are stiff or itchy, difficult to wash in a machine, and must be laid out or hung up to dry and perhaps ironed. Or dry-cleaned. And they need to be properly fit to each person.
Most moderns want thin polyester or cotton knits, for that reason. Wash-wear-tumble-dry, and therefore you need way more items, as they wear out quickly.
-- Woman who wears tweed dresses