Banpresto/Kotobukiya Ah! My Goddess Belldandy Plain Clothes 1/8 PVC (バンプレスト/コトブキヤ ああっ女神さまっ ベルダンディ 私服Ver.). Original sculptor 中邨拓智. Released on July 2006 with an MSRP of ¥5,040.
This illustration is the only one I can find with Belldandy in that clothing.