Hat-tip to AustenBlog, once again! I found this page via AustenBlog - it's from CostumersGuide.com, a site which I have visited before - but somehow I missed this particular page! Anyway, check it out - it's full of instances where the same article of clothing (LOL, I mean costumes - somehow, when I'm watching I always forget that they're just costumes, not real clothes!) has been used in multiple period dramas. Some of them I had noticed beforehand, but in many cases I never realised I had seen the same dress in two or more different movies!
Here's just one of many examples:
The same brown dress worn by Lizzy (Keira :-) ) in her visit to Pemberley in Pride and Prejudice 2005 was worn by Charity Wakefield as Marianne Dashwood in Sense and Sensibility 2008.