Castle of Blood (1964)
(Danza Macabra)
https://www.imdb.com/title/tt0057993/
This is another gothic horror film that includes brief nudity. This is from early in the 1960's when such scenes were still rare and scandalous even in Europe.
The original Italian version of this film features the beautiful, blonde Sylvia Sorrente (Elsi) in a topless scene that the version for the US did not. She plays a newlywed, who, along with her husband, meets her fate in the castle. This is not before a scene of her removing her dress and corset to reveal her breasts.
Sorrente is was born in 1941 which makes her about 23 at the time.
Here is the original Italian version dubbed in English. I cut out some shots of her husband lurking around the castle and just kept the good parts. There is also a quick shot of her bare breast with a nipple exposed when the monster is biting her. Later, when her husband runs in to save her, her corset is miraculously back on covering her breasts.