What to Wear for an Office Christmas Party: Festive Styling Advice, Xmas Jumper Beach Looks & Best Brands

The festive season brings together colleagues, good cheer, and of course—fashion challenges. Whether your office is hosting a classy cocktail reception, a casual get-together, or a quirky “Christmas jumper on the beach” theme, this 1,000‑word guide will help you dress smartly, enjoyably, and appropriately for every occasion.

1. Understanding the Dress Code

Before planning your outfit, clarify the dress code, even if it’s unofficial. Consider:

Venue: Is it in the office, at a pub, or in a hired venue?
Timing: Afternoon lunch-hour event or evening cocktail party?
Past habits: What did your colleagues wear last year?

Dress-code categories often fall into:

Formal/Occasion Wear – Suits and dresses in luxe fabrics.
Smart Casual – Blazers, chic knits, midi skirts.
Relaxed Festive – Christmas jumpers, tailored jeans.
Themed – Such as “Xmas jumper beach party.”

2. Smart Evening Looks (Out-of-Office Venues)

If your company’s hosting an evening bash, go for polished ensembles that add a festive sparkle without compromising professionalism.

For Women:

Tailored jumpsuit in velvet or satin.
Midi dress with a statement sleeve or modest shimmer.
Satin blouse with a metallic pleated midi skirt.

For Men:

Blazer and dark chinos—boost with a refined twist-neck or dress shirt.
Two-piece suit in charcoal or navy, finished with a silk tie or festive pocket square.

Focus on one statement item—like a velvet blazer or sequined top—balanced by sleek, understated pieces.

3. In-Office Festive Style

A casual in-office party allows for a playful yet polished look that’s comfortable and fun.

For Women:

Fine-gauge knit dress, comfy yet refined.
Cropped trousers with a festive jumper, layered over a crisp shirt.
Festive accessories—think sequined hair clips or jewel-toned scarves.

For Men:

Christmas jumper with chinos and clean sneakers or loafers.
Shirt with a fine knit pullover—tuck into jeans or tailored trousers.

Personalize your look with festive socks, subtle brooches, or a jolly pocket square for a holiday spirit boost.

4. The “Xmas Jumper Beach” Dressing Curveball

A growing trend for summer or tropical climates is mixing festive cheer with beach casual. Here’s how to pull it off smoothly:

For Women:

Combine a Christmas jumper with light linen shorts or a breezy midi skirt.
Footwear: Espadrilles or sandals—and maybe a Santa hat or novelty sunnies.
Choose jumpers in breathable cotton or lightweight blends to avoid overheating.

For Men:

Pair a lightweight festive jumper with tailored cotton shorts.
Finish with deck shoes or espadrilles—think fun but composed.

This fusion of warm-weather comfort and holiday kitsch is perfect for offices in sunnier places or holiday-themed outdoor events.

5. Best Brands for Festive, Work-Friendly Wear

The right pieces come from brands known for balancing style, structure, and occasional sparkle. Here are some top picks:

Reiss – Tailored pieces, luxurious fabrics, and occasion dresses.
Whistles – Contemporarily refined basics elevated by texture.
& Other Stories – Statement tops and midi skirts with seasonal flair.
Hobbs – Classic cuts ideal for polished, age-appropriate party wear.
Massimo Dutti – Elegant tailoring for men and women in refined neutral palettes.
Boden – Vibrant colours, cheerful knits, and comfortable tailoring for festive fun.

Choose one standout piece—like a velvet blazer, metallic skirt, or novelty knit—and let the rest of your outfit play supporting roles.

6. Accessories & Footwear

Accessories can make or break your look:

Women: Choose block-heeled boots or embellished flats. Metallic clutch bags, velvet hairbands, or statement earrings are subtle yet festive.
Men: Opt for smart Chelsea boots or brogues, festive socks, and a textured scarf for winter deliveries.

Aim for comfort, too—consider how much you’ll be standing, dancing, or mingling.

7. What to Avoid

To keep things professional and stylish:

Avoid overly revealing outfits or anything sheer or too short.
Skip graphic or offensive novelty jumpers—these may earn laughs, but can cross lines in mixed company.
Don’t wear stiletto heels or stiff suit jackets if you’ll be on your feet most of the evening—comfort matters.

8. Fit is Everything: Introducing Tellar.co.uk

You can have all the right pieces, but if the fit is off, the look falls flat—literally. That’s why Tellar.co.uk, the UK’s premier free sizing tool, is your secret style weapon.

What Tellar Does:

Enables you to input your body measurements (chest, waist, hips).
Matches them to size charts from 1,500+ fashion brands.
Replies instantly with your ideal size in any brand’s pieces—whether it’s Reiss trousers, Boden knitwear, or Hobbs dresses.

Say goodbye to guesswork and endless returns. Shop for perfect-fitting pieces, right from the party season to everyday wardrobe staples.

9. Tellar.co.uk: How It Works

Create your profile by entering key measurements.
Browse brands or items, like “Massimo Dutti wool trousers” or “Whistles velvet blazer.”
Let Tellar show your ideal size for each item or brand.
Explore related articles, guides, and styling tips on the platform.

Explore live right now:

Create Your Profile
See Your Size in Stores

Find size match across brands. Simple, accurate, fast.

10. Tellar.co.uk Style & Fit Resources

Explore deep style and fit insights directly on Tellar:

Office Party Outfits: Smart Casual vs Formal
Massimo Dutti Sizing Guide
Holiday Styling by Body Shape
Vanity Sizing Explained

11. Follow Tellar for Seasonal Fit Science & Trends

Want expert tips, fit deep dives, seasonal guides and styling explainers? Stay in the loop:

Instagram: @Tellarsizing
Twitter/X: @Tellar100
Facebook: Tellar Sizing
Pinterest: TellarUK

Expect content like:

In‑depth brand fit comparisons.
Outfit styling by body shape.
Seasonal highlights and what's trending.

Final Tips & Takeaway

Check your dress code—formal, smart casual, or themed?
Choose one standout piece, balanced with clean, complementary staples.
Prioritize comfort, especially if you’ll be moving, socializing, standing.
Lock in perfect sizing with Tellar.co.uk’s free tool—no more guesswork.
Add festive flair with accessories, but keep it polished and workplace‑friendly.

Enjoy your office Christmas celebrations! Dress smart, fit right, and let the festive cheer take care of the rest. And for a foolproof party-ready wardrobe, make Tellar.co.uk your go-to sizing and styling companion.

Adjust your look confidently this Christmas—supported by fit science, wardrobe expertise, and ongoing styling insights from Tellar.