The Aquamarine Dress

She had owned the aquamarine dress for ever.
Or she had owned AN aquamarine dress for ever.
When it started to fade or show signs of wear she would buy another dress as similar in style or colour as possible.
Sometimes she bought several identical dresses at the same time.
She liked the feeling of having dresses in hand.

She never threw away the old dresses.
Her wardrobe was full of the same dress.