Everyone knows costumes are the best part of Halloween (well, maybe tied with free candy), and that includes costumes for our pups.

If you’re planning to dress up your dog this year—with or without the side-eye—you’re not alone. Pet parents spent nearly a half-billion dollars on pet costumes in 2019, according to the National Retail Federation (NRF). That’s a lot of pumpkins (pupkins?) and tutus.

When picking out a Halloween costume for your dog, you need to do two things—aside from choosing a theme, of course:

1.) Measure your dog. Like human clothes, dog clothes, including costumes, can vary according to brand. Be sure to measure your dog and use the product’s size chart or adjust your DIY measurements as needed. Take these three measurements:

- Length: Measure the length of your dog along their spine from the base of the neck to the base of the tail.

- Chest girth: Measure along around the largest part of your dog’s rib cage, all the way around when they’re standing.

- Neck girth: This should generally be the same measurement as their collar.

2.) Consider temperament. Because our dogs are our best friends, we want them to be comfortable on their walk to get some tasty treats. Sometimes just a headband works for a dog who may be uncomfortable in a full-body costume. Take your cues from them by observing their body language.

We have rounded up a few of our top picks based on the size of the dog. Of course, creativity is all about adaptation, so if you want to put your Great Dane in a Yoda suit, you do you.