Only because I've been reading the Emily WIlde series and been looking for everything and anything related online, including fan works, am I riled up about this. I see so much fan art of Emily and Wendell in Victorian attire--full skirts and long jackets. I see so many fan posts about Emily and Wendell doing Victorian things and being Victorian besties.
The first book is set in 1909, the second in 1910. They're not doing Victorian things, people. They're doing late-EDWARDIAN things. They should be wearing late-Edwardian styles in your fanart! Raise her waistlines, slim her skirts! Shorten his jackets! Think: Paul Poiret, Downton Abbey. When Emily talks about putting her hair in a bun, think Gibson Girl. If not anything else, in a couple years (storyverse), the Titanic will sail. In a few more years, World War One will start. Put them in clothes of that era.
Although I think the character Emily Wilde doesn't give a crap about fashion, she would still be in era-correct silhouettes. I could actually see her donning pants and boots on some research expeditions. Stop putting her in a big bustle and tiny hat combination!