What size costume does a Boston Terrier usually wear?

Most Boston Terriers weigh between 15 and 25 pounds and typically wear a size Medium, but because of their broad chests, you should always measure their chest girth before buying.

How do I get my Boston Terrier used to wearing a costume?

Start early by placing the costume on the floor and letting them sniff it while giving treats. Gradually dress them in it for just a few minutes at a time, offering praise and rewards.

What are some easy DIY costumes for a Boston Terrier?

Since they already look like they are wearing a tuxedo, adding a simple red felt bow tie to their collar or a lightweight paper top hat makes an instant, comfortable costume.

AI-generated example

Boston Terrier Costumes

Dress your dapper 'American Gentleman' in the perfect, comfortable costume.

Boston Terriers are naturally expressive and already look like they are wearing a tiny tuxedo, making them the perfect models for Halloween costumes. Whether you want to lean into their dapper look with a formal suit or go for a funny character outfit, choosing the right fit is key for their unique chest shape. This guide helps you select, fit, and safely style a costume for your Boston Terrier.

Difficulty: Easy
Time: ~15 min
Budget: $15–45

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40 Boston Terrier costume ideas

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What you need for a Boston Terrier Costumes costume

Dog tuxedo harness
A lightweight, adjustable harness styled like a black tuxedo jacket with a white collar and red bow tie.
DIY: Attach a small red felt bow tie directly to your dog's existing black collar.
Amazon
Step-in character costume
A front-facing costume (like a pirate or superhero) that slips over the front legs and fastens around the neck.
DIY: Cut the sleeves off a toddler-sized graphic t-shirt to fit your dog's front legs.
Amazon
Lightweight cape
A simple red or black satin cape with a soft hook-and-loop neck closure that doesn't restrict movement.
DIY: Cut a small triangle of red felt and secure it to the back of their collar with fabric tape.
Amazon
Adjustable headpiece or hat
A lightweight hat with comfortable ear holes and an adjustable elastic chin strap.
DIY: Craft a tiny top hat out of black cardstock and attach it to a soft elastic band.
Amazon

How to put it together

1
Measure your Boston Terrier's neck, broad chest, and length to ensure a proper fit that won't restrict breathing.
2
Introduce the costume pieces slowly a few days before Halloween, rewarding your dog with treats for sniffing and wearing them.
3
Put on the main body piece first, ensuring the chest area is loose enough to fit two fingers comfortably underneath.
4
Secure any neck straps or hook-and-loop fasteners, making sure they do not pinch the skin or fur.
5
Gently place any headpieces or hats over the ears, adjusting the elastic strap so it is snug but not tight.
6
Check your dog's mobility to ensure they can walk, sit, and go to the bathroom without the fabric dragging or binding.
7
Take your photos quickly while your dog is happy and engaged, then remove any restrictive elements.

Boston Terrier Costumes for couples, groups, kids & more

couples: Dress up as a classic movie monster like Frankenstein's Monster while your Boston Terrier wears a matching mad scientist lab coat.
group: Go as a family of circus performers with your Boston Terrier styled as the 'Strongman' in a striped singlet.
kids: Have your child dress as a superhero while your dog wears a matching color-coordinated cape as their trusty sidekick.
Plus size: Look for dog costumes labeled 'broad chest' or 'French Bulldog/Boston Terrier fit' to accommodate their wide rib cages.

Tips

Prioritize safety and comfort over complexity; if your dog hates hats, stick to a simple decorated collar or harness.
Boston Terriers are prone to overheating; avoid heavy plush fabrics and never leave them unattended in a costume.
Keep photo sessions short and positive, using high-value treats to keep their ears perked and eyes on the camera.

Boston Terrier Costumes costume FAQ

What size costume does a Boston Terrier usually wear?: Most Boston Terriers weigh between 15 and 25 pounds and typically wear a size Medium, but because of their broad chests, you should always measure their chest girth before buying.
How do I get my Boston Terrier used to wearing a costume?: Start early by placing the costume on the floor and letting them sniff it while giving treats. Gradually dress them in it for just a few minutes at a time, offering praise and rewards.
What are some easy DIY costumes for a Boston Terrier?: Since they already look like they are wearing a tuxedo, adding a simple red felt bow tie to their collar or a lightweight paper top hat makes an instant, comfortable costume.

Did you know? Because of their tuxedo-like black and white markings and gentle disposition, the Boston Terrier has been nicknamed the 'American Gentleman' since the late 19th century.