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What to Wear for a Semi‑Formal Work Event

Author: Stylist at TellarDate: 2025

Semi‑formal workplace events—like evening networking sessions, awards ceremonies, client dinners, or company celebrations—require a polished, professional look that's a bit more dressed up than standard business attire. The goal: refined, confident, appropriate.

1. Understand the Semi‑Formal Dress Code

  • Not black-tie: You won't need ball gowns or tuxedos—but you shouldn’t show up in jeans, sneakers, or casual tees.

  • More dressy than business casual: Think smart tailoring, rich fabrics, subtle elegance.

  • Neutral palette preferred: Blacks, navies, charcoals, creams, taupes—these allow easy mixing and a clean, elevated appearance.

  • Incorporate personality: Choose fine textures (silk, linen, wool blends), accent colors, or statement accessories to reflect your personal style—without detracting from professionalism.


2. Essential Wardrobe Pieces

For Everyone:

  • Quality Blazer or Suit Jacket

    • Men: A well-fitted navy or charcoal blazer is a versatile staple.

    • Women: A tailored blazer in a neutral shade—single‑ or double‑breasted—elevates dresses, separates, or trousers.

  • Smart Trousers or Skirts

    • Men: Slim or straight-leg trousers in coordinating colors.

    • Women: Tailored trousers, pencil skirts, or midi skirts in luxe fabrics like wool crepe or satin‑blend.

  • Dresses (for women)

    Choose a sheath or wrap dress in midi length. Solid colors or subtle patterns (like micro paisley or geometric prints) are ideal.

  • Crisp Shirts and Tops

    • Men: Classic button-downs in white, light blue, or pinstripe.

    • Women: Silk blouses or tailored tops in neutral or accent hues.


Optional, but Highly Recommended:

  • Waistcoat (vest)

    Great for men’s three-piece refinement and women seeking a modern twist—pair with matching trousers or under a blazer for depth.

  • Statement Outerwear

    Long wool coats, polished trench coats, or smart cape jackets are especially useful if the venue or season calls for an additional layer.


3. Shoes & Accessories

Shoes

  • Men: Oxfords, brogues, or loafers in black or dark brown leather. Avoid trainers.

  • Women: Closed-toe heels (kitten or block), ballerinas, or smart loafers. Leather or faux-leather finishes are best.

Accessories

  • Belts: Coordinate leather belt with your shoes; buckle size should be classic and uncluttered.

  • Jewelry (if you choose to wear it):

    • Men: A sleek watch and minimal rings.

    • Women: Delicate necklaces, stud earrings, or fine bangles. Keep metal finishes consistent.

  • Pocket squares / ties: For men, a silk pocket square can add flair. A tie is optional unless event cues are more formal; solid or subtly patterned.

  • Bags:

    • Men: A sleek leather messenger or portfolio.

    • Women: Structured clutch, small tote, or leather satchel in muted tones.


4. Fit, Fabric & Fit Science

  • Fit is everything: Even an expensive outfit looks cheap if it doesn’t fit. Shoulders aligned, waist subtle, trousers hemmed to polish.

  • Fabric quality matters:

    • Look for wool blends, silk, structured cotton, or linen-wool mixes—these drape beautifully and avoid wrinkling.

    • Avoid clingy synthetics unless well-tailored.

  • Fit science:

    • Blazers should allow one or two fingers at the collar, seat at the jacket hem should cover the rear’s mid-point.

    • Trousers should break subtly—you want a crisp crease, not stacks of fabric.

    • For women, waistlines should follow your natural waist, bust-fit without pulling, and sleeve length to the wrist bone for classic tailoring.


5. Top Brands By Category

Blazers & Suits

  • Reiss – refined tailoring, slim and modern silhouettes.

  • Hugo Boss – classic suiting with premium materials.

  • Smythson (via Studio by Tiit) – excellent quality blazers with structured cuts.

Shirts & Blouses

  • Thomas Pink (Lendrum & Hartman) – crisp, durable men’s shirts.

  • Eton – perfect blend of slim fits and wrinkle-resistant cotton.

  • Jigsaw – elegant silk and crepe women’s tops.

Trousers & Skirts

  • COS – great fit trousers in timeless silhouettes.

  • Theory – sleek, contemporary styling.

  • Whistles – modern pencil and wide‑leg skirts in luxurious fabrics.

Shoes

  • Loake, Church’s (men) – handcrafted Oxfords and brogues.

  • Russell & Bromley, L.K.Bennett – polished heels and flats for women.

Accessories

  • Mulberry, Aspinal of London – structured leather handbags and satchels.

  • Turnbull & Asser – understated silk tie and pocket square craftsmanship.

(Prices vary by piece and retailer; consider investing in a few staple items for repeat wear.)


6. Styling Tips

  1. Mix neutrals with statement touches

    E.g., navy suit with a burgundy silk blouse or forest green tie.

  2. Layer smartly

    A waistcoat or a sweater‑vest under a blazer adds warmth and style.

  3. Balance proportions

    If wearing a structured blazer, pair with tapered trousers; if wearing wide-leg trousers, try a fitted top.

  4. Polish details

    Polished shoes, tidy grooming, ironed garments—small details signal respect and class.

  5. Know the venue and adjust

    Evening events may allow more richness (velvet trims, satin accents), while daytime needs lighter fabrics and colors.


Tellar.co.uk: Your Personal Style + Fit Companion

What is Tellar.co.uk?

Tellar.co.uk is a data-driven personal styling and fit platform designed to help you build a wardrobe that looks great and fits perfectly for every occasion—especially smart and semi-formal work events.

How it works:

  1. Tellar Sizing System: You input simple body measurements; Tellar’s algorithm generates a 3D digital avatar with personalized sizing.

  2. Smart Item Matching: The platform recommends clothing from partner brands tailored to your fit profile—no guessing or trial-and-error.

  3. Outfit Suggestions: Curated looks for events, seasons, or everyday wear—complete with pieces from trusted brands and style guidance.

  4. Seamless e‑commerce: Shop recommended items with confidence, knowing they’ll fit. Track outfits, materials, and cost-per-wear over time.

👉 Explore and start your style journey: tellar.co.uk


Why Tellar Works for Semi‑Formal Styling

  • Brand fit mapping: Know which brands or cuts work best for your frame—e.g. COS slim trousers vs. Theory structured fits.

  • Outfit curation: See semi‑formal combinations assembled for you—like “charcoal wool blazer, navy silk blouse, tailored pencil skirt.”

  • Fit confidence: Avoid misfires—no more surprises when ordering tailored items online.


Join Our Community

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Putting It All Together

Post Image

Here’s a polished example using all of the above:

Piece

Brand Recommendation

Blazer & Waistcoat

Reiss Navy Blazer + waistcoat

Shirt/Blouse

Thomas Pink crisp shirt / Jigsaw silk blouse

Trousers/Skirt

COS tapered trousers / Whistles pencil skirt

Shoes

Church’s Oxfords / L.K.Bennett block heels

Accessories

Aspinal of London belt and bag; Turnbull & Asser pocket square

Tellar.co.uk can model this outfit for your own body, show fit suggestions (e.g. waistcoat cut for your torso), and shop across brands that fit you—cutting down returns and boosting wardrobe consistency.


Final Takeaway

A semi‑formal work event is your moment to shine with quiet confidence. Invest in quality pieces that fit, mix timeless and contemporary elements, and pay attention to details. Use tools like Tellar.co.uk to streamline fit and consistency—making style both effortless and enjoyable.

Explore our platform, follow our style deep dives, and let Tellar be your go‑to partner for elevating your professional wardrobe.

Tellar.co.uk – Precise fit. Personalized style. Confident you.


This post was written to guide you on semi‑formal work attire, styling insights, top recommended brands, plus how Tellar.co.uk enhances your style journey with tailored advice and fit technology.

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