If you're a big fan of Pre-Raphelite art, you may have already noticed that this dress in a picture by Edward Burne-Jones,
and this one by Frank Cadogan Cooper
is really similar to the one in Sleepy Hollow.
I always loved that dress anyway, because it was reminiscent of the ones that Miranda Richardson wore as Queen Mab in the Hallmark Merlin Miniseries, that pretty much influenced my entire clothing taste since then, but now that I know it's a Pre-Raphelite dress, I love it even more!
Anyway, I am sure a lot of people realise this already, but I had to share it anyhow! I'm so excited!
I also just found this wonderful resource, this page has links to so many wonderful movie costumes!