Halter top black and white knit material

This is like a sweater material and thick and pretty. Size small and fits pretty true to size. Im 5.1 and about a 2 or 4 but smaller chested and there's room for more as theres stretch. This is practically new as I didn't wear it much. Maybe aboit 3 to 4 times. Always had it dry cleaned but hand wash would be okay. It was baught at monarch beach california at a boutique