This is an original gown from the early Regency, accented with a delicate tulle overlay and featuring slim sleeves. Back when I sewed professionally, a customer sent me this photo so I could reproduce the dress, which was a really fun project. I believe the original garment is in the Kyoto Museum collection.
Regency Wedding Dress by Andrea Galer - Handmade. "Designed by Andrea Galer, Award -winning designer who has created the costumes for ITV's Persuasion (2007), BBC's Miss Austen Regrets (2007) and the film Mansfield Park (1999) to name but a few." So floaty and ethereal and romantic!! love it!!!