If you're hunting for a Harry Potter Book Week costume that actually gets the nod from the teacher (and not the dreaded "is that meant to be a witch from a movie?" question), the secret is picking a Hogwarts house first and building the look around it. A black robe on its own reads as "generic wizard." A black robe with a red-and-gold scarf, round glasses and a tiny lightning...

Tired of Wally? Here are 20 fresh boys' book week costume ideas Aussie kids will actually want to wear — from Wimpy Kid to Captain Underpants to Harry Potter. Comfortable, recognisable, and tied to a real book.