18+ — Adults only. This is the After Dark corner of Grecian Finds: honest picks for grown-ups, written tastefully. Under 18? Our main Christmas guides are this way.
Yes, sexy plus size Christmas party costumes exist in real sizes — and you do not have to settle for a stretched-out straight-size costume or a shapeless sack with a Santa hat. The seven picks below are all Christmas products made for curves: Mrs. Claus velvet sets, a sexy elf, a sequin Santa dress, a hooded Santa, a reindeer set, a velvet bodysuit and a Christmas tree dress. Every one is sold in plus sizes on Amazon, and every one is picked for how it actually fits a curvy body — stretch where it matters, a defined waist, and no guessing from a size chart that stops at XL.
The difference from our Halloween guide is the occasion. These are Christmas party costumes: velvet, faux fur, sequins and red-and-green, made for office parties, festive nights out and Christmas photos — not spooky season. If you want the Halloween versions instead, see our plus size sexy Halloween costumes — same fit-first approach, different night. And if you are between sizes, check your size first with our costume size converter before you order, because costume sizing runs nothing like normal clothing.
1. Mrs. Claus velvet set — the classic, done properly
The safest pick on this list and the one most women actually end up wearing twice. A proper Mrs. Claus set is a red velvet dress with white faux-fur trim, a belt, and a cape or shawl — the 5- to 8-piece sets (Wabolay, VAPICK, Boveco) include the hat, apron and gloves, so you are not hunting for accessories the night before the party. Velvet stretches a little and hides a multitude of sins; the belt is what makes it flattering instead of a sack.
Wear it for: office Christmas parties, family gatherings, Christmas photos, any event where you want to look festive and a little bit sexy without showing much skin. It is the most forgiving fit on this list.
Fit tip: size by your bust, not your waist — the velvet bodice is the tight part, and the skirt flares. If the set comes with a cape, wear it open; closed, it hides the waist the belt just created.
Shop plus size Mrs. Claus velvet costumes on Amazon — most sets run about $30–60.
2. Sexy elf set — the playful one
The elf is the Christmas costume that actually flatters a curvy figure, because the good sets are built around a fit-and-flare dress: fitted bodice, flared skirt, belt at the waist. The 5- to 14-piece sets (Wabolay, SOMSOC, WeGuard) add the hat, ears, belt, socks and shoe covers, so the whole look arrives in one box. The sequin elf versions add sparkle without adding bulk, which is the trick with sequins on curves — keep the shine on top, let the skirt move.
Wear it for: Christmas parties, Santa’s-helper themes, festive photos, any night where cute beats glamorous. It photographs brilliantly because the green-and-red contrast does the work.
Fit tip: elf dresses run short — check the length on the size chart, not just the bust. If you are tall, size up and belt it; if you are short, the standard length is usually right and the belt does the shaping.
Shop plus size sexy elf costumes on Amazon — most sets run about $20–50.
3. Sequin Santa dress — the one that catches the light
If you want to be noticed the moment you walk in, this is the pick. A sequin Santa dress is a fitted red dress with white fur trim and all-over sequins — it does the dressing up by itself, so you need almost nothing else: black tights, simple heels, done. Sequin fabric has no stretch, so the fit has to be right; that is the one thing to get serious about with this pick.
Wear it for: Christmas parties, New Year’s Eve, any night where you are the centre of attention and you know it. It is the least comfortable pick on this list and the most photographed — pick your priority.
Fit tip: sequins do not forgive a tight fit, so size up if you are between sizes and let a belt define the waist instead of the dress. Check the size chart’s hip measurement, not just the bust — sequin dresses pull at the hip first.
Shop plus size sequin Santa dresses on Amazon — most run about $25–60.
4. Hooded Santa dress — the easy one
The hooded Santa dress is the low-effort pick: a red velvet dress with an attached hood, a belt, and nothing else to coordinate. The RSLOVE hooded Santa ($36.99 on Amazon) is the best-known version, and it works because the hood replaces the hat — one less thing to lose, one less thing to buy. It is less sexy than the bodysuit and more comfortable than the sequin dress, which makes it the pick for a long night.
Wear it for: long parties, pub crawls, outdoor Christmas events, any night where you will be wearing the costume for hours. The hood is also a blessing in cold weather.
Fit tip: the hood adds weight at the shoulders, so a dress with a defined waist matters more here than with the other picks. If the dress has no belt, add your own wide black belt — it changes the whole silhouette.
Shop hooded Santa costumes for women on Amazon — most run about $30–45.
5. Reindeer costume set — the fun one
The reindeer is the costume for the woman who wants to have fun rather than look glamorous. The good sets are a brown dress or tutu with antlers, a tail and ears — the QLINLEAF 6-piece set ($22.99) and the Fairytale 4-piece set ($39.99) are the budget end, and Rubie’s reindeer ($55–62) is the sturdier one. The tutu versions are the most flattering on curves because the tutu sits at the waist and flares out, which is the most forgiving silhouette there is.
Wear it for: fun parties, group costumes (one reindeer in a group of Santas and elves always gets the laugh), Christmas photos with kids. It is the least sexy pick on this list and the most joyful — which is sometimes the point.
Fit tip: tutu sets are one-size or two-size, so check the waist measurement, not the dress size. If the set is a onesie instead of a dress, size up — onesies run small and there is nowhere to hide a tight fit.
Shop plus size reindeer costumes on Amazon — most sets run about $20–60.
6. Velvet Santa bodysuit — the boldest one
The bodysuit is the sexiest pick on this list and the one that needs the most confidence — and the most honest sizing. A velvet Santa bodysuit is a fitted red velvet bodysuit with white fur trim, usually worn with a skirt, shorts or tights. Velvet stretches, which helps, but a bodysuit has no forgiveness at all: if it is too small it pulls everywhere, and if it is too big it bags. Buy it from a seller with a real size chart and read the reviews with photos before you order.
Wear it for: adult Christmas parties, festive date nights, any event where bold is the brief. Not for the office party, and not for family gatherings — know your room.
Fit tip: size by your torso length as well as your bust. Bodysuits are sized by bust and waist, but the torso length is what decides whether it pulls at the shoulders. If you are long-torsoed, size up and wear it with a skirt rather than on its own.
Shop velvet Santa bodysuits on Amazon — most run about $20–40.
7. Christmas tree green dress — the unexpected one
The green dress is the pick nobody expects and everybody remembers. A deep green velvet or sequin dress with gold or red accessories reads as a Christmas tree without a single bauble pinned to it — elegant, festive, and a long way from the red-and-white everyone else is wearing. It is also the most re-wearable pick on this list: take off the Santa hat and it is a party dress you can wear all December.
Wear it for: Christmas parties where you want to stand out without wearing a costume-costume, festive dinners, New Year’s Eve. It is the pick for the woman who wants the Christmas spirit without the fancy dress.
Fit tip: green velvet shows every lump the way red velvet hides them, so a fit-and-flare cut matters more here than with the red picks. A-line or fit-and-flare, never bodycon, unless the fabric has serious stretch.
Shop sexy Christmas tree dresses on Amazon — most run about $25–45.
The 7 picks at a glance
| Pick | Best for | Approx. price |
|---|---|---|
| 1. Mrs. Claus velvet set | Office parties, family, photos | ~$30–60 |
| 2. Sexy elf set | Playful parties, Santa’s helper | ~$20–50 |
| 3. Sequin Santa dress | Being noticed, New Year’s Eve | ~$25–60 |
| 4. Hooded Santa dress | Long nights, cold weather | ~$30–45 |
| 5. Reindeer costume set | Fun parties, group costumes | ~$20–60 |
| 6. Velvet Santa bodysuit | Adult parties, date nights | ~$20–40 |
| 7. Christmas tree green dress | Standing out, re-wearable | ~$25–45 |
Prices checked 9 November 2026.
Price figures are approximate ranges from Amazon US listings checked 9 November 2026. Final prices change with size, colour and sales; re-check before you buy. The bodysuit and tree dress ranges are the least grounded — check those two first at publish time.
How to pick your size (so it actually fits)
Costume sizing is not clothing sizing. Three rules, learned the hard way:
Measure, do not guess. Measure your bust, waist and hips with a soft tape and compare against the seller’s size chart — not the letter size, the inches. Costume brands size small more often than they size big, and a “3X” from one seller can be a “1X” from another. Our costume size converter turns your measurements into the right size across brands.
Size by the tightest part. For a dress, that is usually the bust; for a bodysuit, the torso length; for a sequin dress, the hips. If two measurements point at two sizes, take the bigger one and belt the waist — a belt fixes a loose waist, nothing fixes a tight bust.
Read the reviews with photos. A costume with fifty reviews and no photos is a gamble. Look for reviewers with a similar body shape to yours and check what size they bought — that is worth more than the size chart.
Frequently asked questions
Where can I find sexy plus size costumes for a Christmas party?
On Amazon, in the plus-size costume sections — the seven picks above are all sold there in 1X–4X. The trick is to search “plus size” plus the costume name (Mrs. Claus, elf, reindeer) rather than browsing the general costume pages, which mostly stop at XL. This guide is Christmas-specific; for Halloween versions, see our plus size sexy Halloween costumes guide.
What is the best sexy plus size Christmas costume?
The Mrs. Claus velvet set, for most women — it is the most forgiving fit, the most complete set (hat, belt, cape and gloves in one box), and the one you can wear to an office party as well as a night out. If you want to stand out, the sequin Santa dress; if you want comfort for a long night, the hooded Santa dress.
Do plus size Christmas costumes run small?
Usually, yes. Costume brands size small more often than they size big, and a “3X” from one seller can be a “1X” from another. Measure your bust, waist and hips, compare against the seller’s size chart in inches (not the letter size), and size up if you are between sizes — a belt fixes a loose waist, nothing fixes a tight bust.
How do I make a sexy Christmas costume look classy, not cheap?
Pick one statement and let the rest be simple: velvet or sequins, not both; a defined waist, not a shapeless sack; real accessories (a good belt, simple heels) instead of plastic add-ons. The Mrs. Claus velvet set and the Christmas tree green dress are the easiest picks to make look expensive, because the fabric does the work.
Can I wear a sexy Christmas costume to an office party?
It depends on the office — and on the costume. The Mrs. Claus velvet set and the hooded Santa dress are office-safe at most parties; the velvet bodysuit and the sequin Santa dress are not. When in doubt, pick the velvet set: festive, flattering, and nobody’s HR department will remember it for the wrong reasons.