The National Retail Federation says pet owners are expected to spend $370 million to dress up Fido and Fluffy this year.
That's 40-million more than 2011.
So just what costumes will be the cat's meow?
Expect to see quite a few pumpkins and devils.
While costumes can be cute, make sure they're comfortable. And when kids in costume come by for candy, make sure you're pets are prepared.