How the fuck does forcing a child to make a costume increase their love of reading?
If you need to dress up to prove something is fun, that just proves that it isn't really any fun.
Reading is brilliant. All you need is a book. You can do it anywhere, any time, no matter who you are, what you look like, how many friends you have, how rich your parents are, what you're wearing.
Encouraging children to read by making them wear weird clothes is like encouraging them to swim by teaching them mental arithmetic.
Except mental arithmetic is brilliant and dressing up is a complete pain in the hole.
Putting so much emphasis on attire, on physical appearance and grooming, seems to me to send a pretty dodgy message to children.
Spending hours on your clothes is boring.
You can pretend to be a pirate/Victorian/Roman/nurse/alien/orphan/crone without looking like one.
It all seems so literal and mundane.
Dressing up as a character from a book?
The important things about characters in books are rarely their clothes.