Beautiful and light dress with matching jacket

Okay. This is one of the other items from granny’s closet I’m having a hard time letting go. I’ve never worn a dress that fits me the way this one does. It hits me everywhere right. There is no tags besides the brand. So no idea of material or size. I’d say a 16-18 since that what she typically wore and how it fits me. The wide straps are great, the body has a beautiful feminine cut and the little jacket. Such a purposeful outfit.