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St. Patrick’s Day Outfits for Small Dogs: Boo’s Closet, Green Edition

St. Patrick’s Day outfits for small dogs start with a bandana and, for most dogs, end there. Holiday costumes were a staple of Boo’s wardrobe, and the ones in March are the easy ones: the whole costume is a color, the color is green, and a small dog in a shamrock bandana has done everything the day asks. If you want to go further, there is a green sweater for a cold parade and a top hat for one photo, and this page covers both, but nobody has ever needed more than the bandana.
The order is comfort first: the piece the dog can wear all day, then the props that last as long as the picture. Whether dogs like wearing clothes at all and whether they should dress up for the holidays each have their own page; read the first one before buying the sweater.
The green that lasts all day
None of these were Boo’s; they are the picks we think he would have loved, chosen today for a small dog that likes a party.
1. The shamrock bandana, three of them. The St. Patrick’s Day outfit for most small dogs, most years. One knot at the collar, and a three-pack in green, black and navy gives the dog a different one for the parade, the party and the photo. Over three thousand reviews, which for a bandana mostly means the print survives the wash. The St. Patrick’s shamrock bandana three-pack, small.
2. The green tank, two of them. For the dog that is happy in a shirt. A sleeveless cotton tank in a shamrock print weighs nothing, and the second one in the pack covers the moment a green beer lands on the first. A thousand reviews say the small is a real small. KYEESE’s St. Patrick’s Day tank two-pack.
3. The green sweater. March is still winter in most of the country, and a parade is a long time to stand on a cold sidewalk. A plain cable-knit sweater in green is the St. Patrick’s outfit that is also just a warm sweater, and this two-pack comes with a brown one that will do the same job in November. The cable-knit dog sweater two-pack, green and brown.
St. Patrick’s Day outfits for the photo
4. The shamrock bow-tie collar. A green collar with a detachable shamrock bow and a metal buckle, for the dog that wants nothing on its body. It is a newer listing with under a hundred reviews, so it is here for the buckle and the shamrock, not for a long track record. PTDECOR’s St. Patrick’s Day collar with bow tie.
5. The top hat. The leprechaun picture. A bandana-and-hat set, the little green top hat on an elastic strap, the bandana dress underneath, and nothing over the face or on the legs. Thirteen hundred reviews on this one, and it is the most St. Patrick’s Day a small dog can be for the least fabric. SCENEREAL’s St. Patrick’s bandana dress and hat set.
6. The shamrock tutu dress. Green tulle, a bow tie at the collar, and a stretchy top that pulls on like a tee. It has fewer than a hundred reviews and it is a one-photo piece either way: on for the picture, off before the pub. The St. Patrick’s Day shamrock tutu dress for small dogs.
Two St. Patrick’s rules

The sidewalk at a March parade is cold, so the sweater goes under the bandana rather than instead of it, and the top hat comes off the moment the dog stops enjoying the attention. The green beer, the corned beef and the rest of the table are for the humans; the dog gets its own treat for putting up with the bow tie.
Fit, in one line
Sizes come from a tape measure and the brand’s chart, not a guess, and the winter clothes page has the measuring guide.
Boo’s year-round wardrobe is in Boo’s Closet, the holiday before this one is on the Valentine’s page, the one after it is on the Easter page, and if the plan is the parade, the Pride page has the full small-dog parade plan.
Frequently Asked Questions
What should a small dog wear for St. Patrick's Day?
A shamrock bandana, which is the whole outfit for most dogs: a knot at the collar and nothing to size. Add a green tank or a sweater if the dog is happy in clothes and the parade is cold, and a top hat for one photo.
Will a sweater be too warm for a St. Patrick's Day parade?
Usually not in March, when a parade means an hour or more standing on a cold sidewalk; a light knit on a small dog is about right. Take it off if the day turns mild and the dog starts panting or looking for shade.
Can I dye my dog green for St. Patrick's Day?
Skip it. A shamrock bandana or a green tank does the job without putting anything on the dog’s skin, and human hair dye is never for a dog. If a green tail is non-negotiable, the only option is a temporary chalk or spray made for pets, used lightly and washed out the same day.