I'll have to wait and see if this year was the same (it usually takes a few weeks for the repercussions).
Moving on, It looks like literary characters where the theme this year
Here's Little One as Medea

Here's a Thomas Hardy joke that went too far

You could try & interpret my choice in costume but it's not what you think

or is it? never mind, it probably is
Fidel Castro is a literary character, right?

Just Kidding, Nuevo wasn't Castro he was Edgar Allan Poe as a Park Ranger (here he is dancing with Charlie Bucket)

How sweet it was of him to help poor Charlie Bucket tie his laces?

Was Ghostbusters a book before it was a film? That sounds about right.

Then there was Little Mrs. Kieren who almost dressed as Ophelia

I'm sure we could find some Shakespearean character to attribute to this dress
Oh don't you worry, I have more.
But I have promises to keep,
And miles to go before I sleep,