We've put together a gallery of 16 great costumes that you sent in to us. What did your child dress up as? Let us know on Facebook and Twitter.
5. Lily Bobtail
Ella, age five, as Lily Bobtail from Peter Rabbit.
6. Sleeping Beauty
Elsie, age eight months, as Sleeping Beauty.
7. Spiderman
Hafi, age 17 months, as Spiderman.
8. Dennis the Menace
James, age seven, as Dennis the Menace.