This gown was first seen on Tamzin Merchant as Katherine Howard in the 2010 fourth season of The Tudors. Due to The Tudors heavy use of recycled costumes, it is likely that this piece actually dates to an earlier date. The costume was worn again by an uncredited actress as Anne Boleyn in 2016 in Carlos Rey Emperador.
I love getting replies, too! It makes me feel special that the author took a moment to thank me for what I’ve said or give me that little window into their process. 🙂