"I took her dress over to the closet and hung it up for her. It was funny. It made me feel sort of sad when I hung it up," (95-96).
Sunny is the prostitute Maurice sends to Holden’s hotel room after Holden agrees to pay Maurice five dollars for ‘a throw’. Sunny is not much older than Holden and her age as well as her dress depress Holden. He imagines Sunny going to go buy the dress in a store and the store clerk not knowing that Sunny is a prostitute.
The dress itself evokes sympathy in Holden. He feels Sunny deserves better. She should be wearing the dress on a different occasion.
The green dress also represents Sunny shedding off her innocence and hiding it in the closet.