Why did Della sell her long hair?

DELLa sold her long hair to buy a platinum chain for her husband Jim's prized possession, his watch. She wanted to give him a meaningful Christmas gift, despite their financial struggles. Her sacrifice demonstrated her deep love and selflessness, highlighting the theme of giving in their relationship. This act ultimately underscores the irony of their love, as Jim sold his watch to buy DELLa a set of combs for her hair.