Are my previous prayers, performed in a transparent abaya, unacceptable and must they be repeated?

Some scholars, after careful consideration, have concluded that prayer is valid when performed in an abaya that reveals the skin upon close inspection, though they deem it disliked (makruh) and recommend re-performing the prayer within its prescribed time. However, a transparent garment that reveals the skin without close inspection renders concealment unlawful, and prayer performed in it must always be repeated. Therefore, you are not required to re-perform past prayers if the garment only revealed the skin upon close inspection. Nevertheless, in the future, you must be diligent to pray in a garment that provides sufficient concealment, such that the 'awrah (private parts) are not visible, even upon close inspection.