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.
13. Keith the Cat with the Magic Hat
Lilah, age four, as Keith the Cat with the Magic Hat.
14. Mary Poppins
Lillie, age seven, as Mary Poppins.
15. Little Red Riding Hood
Mahiba, age seven, as Little Red Riding Hood.
16. Hermione Granger
Darice, age six months, as Hermione Granger.