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Ask us for a funny Christmas costume and these are the four we reach for: a green tree dress trimmed in gold tinsel, a gingerbread dress buttoned with pom-poms, a harlequin elf suit, and a toy soldier jacket that arrives with its own beard and moustache. All four are full outfits, not one layer over your work clothes, all under £26, and one expects you to bring your own trousers. We flag which.
Four funny Christmas costumes at a glance
A joke costume still has to work as a costume. Every costume goes through over 30 measurement checks, and we run over 500,000 quality checks a year. The two dresses below still carry two different UK size bands rather than one shared guess, so check the specific costume's own chart before ordering. The four side by side:
| Costume | Good for | What's in the pack | Sizes |
|---|---|---|---|
| Christmas Tree Costume (women's) | Office party centrepiece | Green dress, gold tinsel garlands, bauble details, star headband, socks | S (UK 4-6) to L (UK 12-14) |
| Gingerbread Dress Costume (women's) | Family gathering, all day comfort | One-piece gingerbread dress with pom-pom buttons | S (UK 8-10) to L (UK 16-18) |
| Christmas Harlequin Elf Costume (men's) | Smart-funny office do | Harlequin top, trousers, belt, hat, boot covers | M to XL |
| Festive Toy Soldier Costume (men's) | Pairing or group costume | Red jacket, belt, tall hat, white beard, black moustache | M to XL |
The office Christmas party: a full costume, not a jumper
We sell Christmas jumpers too, and a costume is simply a different way to join in. The MorphCostumes Christmas Tree Costume is a green shift dress banded in gold tinsel garlands with bauble details, finished with a star-topped headband, and nobody in the room needs it explaining to them.
1. Christmas Tree Costume: the party centrepiece
The dress, headband, and a pair of socks come as one pack, 100% polyester, sized S to L (UK 4-6 up to UK 12-14). It takes a cold hand wash and a flat air dry, never the machine, which is the trade for a costume that comes back out of the box next December. Tights and boots underneath and it's set for the evening.
A family gathering or an all-day event
Christmas Day runs long, and a costume you're still in at six has a different job to one you wear for three hours. The MorphCostumes Gingerbread Dress Costume is built as one piece rather than layers, so there's nothing to keep adjusting between the present-opening and the photos.
2. Gingerbread Dress Costume: one piece, all day
The bodice and skirt are finished with pom-pom buttons and a candy-stripe hem, sized S to L, though here Small means UK 8-10 and Large means UK 16-18, a different band from the tree dress above. Care is the same: cold hand wash, air dry flat, no tumble dryer. There's nothing to unfasten to sit down in it, which is the whole appeal at a long table.
Smart-funny for the office do
Some office parties want the joke fully dressed. The MorphCostumes Christmas Harlequin Elf Costume is the five-piece version of it: a jagged-collar top and matching trousers in a red and green harlequin split, finished with a belt, a bell-topped hat, and boot covers.
3. Christmas Harlequin Elf Costume: the full five pieces
Top, trousers, belt, hat, and boot covers all come in the one pack, 100% polyester, sized Medium to X-Large. Each piece washes separately by hand in cold water and air dries flat, the same as everything else here. Five pieces in the box, so there's nothing extra to buy and nothing borrowed from your own wardrobe.
Going as a pair or a group
Pairing up goes smoothest when both costumes read from across the room without anyone having to explain the theme. The MorphCostumes Festive Toy Soldier Costume is a red jacket with gold braid trim, a tall black hat, a white beard, and a black moustache, so the face is finished without a face-paint kit.
4. Festive Toy Soldier Costume: pair it with the elf
The jacket, belt, tall hat, and beard-and-moustache set are what arrives; the trousers are yours, dark ones, out of your own wardrobe. Sized Medium to X-Large in 100% polyester, hand wash only, and reshape the hat after washing before it air dries. Stand it next to the Harlequin Elf Costume above and you have a two-person look neither of you had to plan as a matching set.
Want to go bigger?
Two more of our Christmas costumes take the joke somewhere else entirely. The MorphCostumes Inflatable Santa Costume makes it look like Father Christmas is carrying you off, and it gets its own full write-up elsewhere on the blog. The Christmas Mankini needs no introduction from us: across every search for a funny Christmas costume that reached our site in the twelve months to September 2026, it took nearly nine in ten of the clicks. We've covered it properly in our guide to ugly Christmas jumpers and festive fancy dress.
Getting the size and the wash right
Check the specific costume's own size chart before you order rather than assuming "Small" means the same thing twice. The Christmas Tree Costume runs Small at UK 4-6 up to Large at UK 12-14, while the MorphCostumes Gingerbread Dress Costume runs Small at UK 8-10 up to Large at UK 16-18, a different band on the same label. The two men's costumes both run Medium to X-Large, sized on chest measurement rather than on a UK dress size.
All four costumes are washed the same way: by hand, in cold water, then laid flat to dry. Skip the washing machine and the tumble dryer; none of the four is machine washable, and we'd rather put that here than let you find it out afterwards. Treat any mark from mulled wine or a party sparkler the same evening rather than waiting for a full wash.
If your office does Christmas Jumper Day too
Christmas Jumper Day 2026 falls on Thursday 10 December, run by Save the Children with a suggested £2 donation (Save the Children). It's a separate occasion from the office party: a 2025 market report found nearly three-quarters of UK organisations still hold one large Christmas party a year on top of any jumper day at the desk (Office Christmas UK Christmas Party Market Report 2025). Wear the jumper for the day and any of the four above for the evening event; our ugly Christmas jumper guide covers the jumper side.
Frequently asked questions
What are the funniest Christmas costumes for a party?
Our four favourites for a party: a bright green Christmas tree dress, a gingerbread dress with pom-pom buttons, a red and green harlequin elf suit, and a toy soldier jacket with its own beard and moustache. Each one reads as a joke from across the room and swaps your whole outfit rather than layering over what you already have on. All four sit under £26, and each pack lists exactly what's included before you order.
Can you sit down in an inflatable Christmas costume?
Yes: the MorphCostumes Inflatable Santa Costume uses elasticated seals and a strong zip fastening to hold its shape for four hours or more, and it has its own internal pocket for your phone, cards or essentials. It runs on four AA batteries, which aren't included, so pack a spare set for a long evening. The four costumes on this page swap in and out of a chair with no fan to think about either way.
When is Christmas Jumper Day 2026?
Christmas Jumper Day 2026 falls on Thursday 10 December, run by Save the Children with a suggested £2 donation. If your office marks the day with a jumper, any of the fancy dress costumes on this page covers the evening party as a full outfit instead.
Is it normal to wear fancy dress instead of a jumper to an office Christmas party?
Yes, plenty of UK offices treat the party as a separate occasion from Jumper Day itself. A 2025 market report found nearly three-quarters of organisations still host one large Christmas party each year on top of any jumper day at the desk, so a costume for the evening event and a jumper for the day at your desk aren't in competition with each other.
What size should I order for a women's Christmas dress costume?
Check the specific costume's own size chart rather than assuming. Our Christmas Tree Costume runs Small at UK 4-6 up to Large at UK 12-14, while the MorphCostumes Gingerbread Dress Costume runs Small at UK 8-10 up to Large at UK 16-18, so "Small" covers a different size on each. Both are made from polyester; the Christmas Tree Costume's own size guide suggests adding tights and boots underneath for an outdoor event.
What's included in the toy soldier and harlequin elf costumes?
The Festive Toy Soldier Costume comes with a red jacket, belt, tall hat, and a white beard and black moustache, worn over your own dark trousers. The MorphCostumes Christmas Harlequin Elf Costume comes with trousers of its own, plus a belt, a hat, and boot covers, so nothing on that one has to come out of your wardrobe. Both are made from polyester, sized Medium to X-Large, and stay out of the washing machine: hand wash in cold water, then let them air dry.
Four costumes, four different sorts of party, and a good deal more in the full Christmas fancy dress and costumes range if none of these four is quite your joke. We make your best times better with costumes.
