DIY Accessory Repairs
Solution, unlined bag: Melanie Charlton, founder of Clos-ette, a New York City wardrobe consulting service, recommends wiping down the inside with a solution of five parts distilled white vinegar to one part water; this will make the bag more flexible. Then stuff the interior with tissue paper.
Solution, lined bag: Let it stand, stuffed with tissue paper, for a few days. Or just carry it: Daily use will often help a bag regain its natural shape.