you can try these numbers
Young Israel of Brighton Beach
Will pick-up clothing donations. 293 Neptune Avenue, Brooklyn, NY 11235 (718) 385-5002
Project Machson (Met Council on Jewish Poverty)
(212) 453-9525. Will accept clothes in good condition. Call ahead to Michael at (718) 459-6673
Drop-off location is at168 39th Street, basement level in Brooklyn, NY
Ladies Clothing Gemach of Flatbush
Clothing in beautiful and new condition. Phone: (718) 377-8270 Call after 6:00 pm