Hello, Dogsters!

We know there’s been lots of bark about Halloween costumes around here, and — love ’em or hate ’em — they’ve definitely become a tradition. Their appearance in pet stores signals the beginning of a marathon holiday season. We know you’ve all got some adorable Halloween photos of your dogs stashed away on your hard drives, so we’re inviting you to upload those pictures to a Dogster slide show.

We’ll pick five photos from the ones you submit to us and then ask you to vote for your favorite costume during the week leading up to Halloween. One lucky Dogster will receive a $25 gift certificate to Petco, as well as bragging rights.

Submissions are now closed — thanks for all your great photos! Check back tomorrow for details on voting.

Sound good? Here are the rules:

1. Photos must be your own — whether you took them with your DSLR or your camera phone, they’ve got to be all yours.

2. When uploading, make sure to leave us with a valid e-mail address in the caption section. Otherwise, how can we let you know if your dog is picked as the most awesome of the awesomest?

3. Stay tuned for the final voting round.

4. HAVE FUN!

Photo: A Dalmatian dog dressed in a fire department mascot costume by Shutterstock