A shirt, sometimes in day-time all of one piece with its turn-over collar; at worst with a separate collar and a tie passed through it.

Braces that really braced and held up the nether garment of trousers; a waistcoat buttoning fairly high up (no pneumonia blouse)--two waistcoats if she liked, or a dandy slip buttoned innocently inside the single vest to suggest the white lie of a second inner vest.
Over the waistcoat a coat or jacket.

On the head a hat which fitted the head in thirty seconds (allowing for David's shock of hair).
Lace-up or button boots, with perhaps at most six buttons; gloves with one button; spats--if David wanted to be very dressy--with three buttons.

On top of all this a warm, easily-fitting overcoat or a mackintosh.

If you were really dressing to kill (as a man) it might take half an hour; if merely to go about your business and not be specially remarked for foppishness, twenty minutes.