Woman who led two lives film

[ach]

Hi, Need some help getting the name of a film I saw on tv many years ago.It was american and may of been a tv movie.Anyway this woman and her husband moved into a new house and in the attic she found an old dress,when she put it on she was transported back to about 1800 or something and was involved in a love triangle.She kept going back and forth between each time. In the end she died in the past ,also throughout the story in the present there was an old woman who was an expert on the subject and it turned out she had been 1/3 of the triangle all that time ago. The title was something about leading two lives. Any help would be appreciated. Thanks

[froggequene]

Does this seem familiar?

http://www.imdb.com/title/tt0078430/plotsummar y

[ach]

Thankyou so much! I kept coming across 'the two lives of carol letner' on imdb.
Thankyou