Best Brands for Event Wear in the UK & USA
Author: Stylist and brand team at Tellar
Date: 2025
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Best Brands for Event Wear in the UK & USA — And What to Pick
When it comes to dressing for weddings, formal occasions, red carpet galas, or stylish cocktail evenings, the perfect event outfit isn’t just about aesthetics—it’s about fit, fabric, confidence, and comfort. Below, we break down the top eventwear brands in the UK and USA, what to buy from each, and how to guarantee your perfect fit with Tellar.co.uk—the UK’s leading free fashion sizing tool and style content hub.
🇬🇧 Best UK Brands for Event Wear
Reiss
Timeless tailoring and structured shapes make Reiss ideal for wedding guest outfits and polished formal looks.
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What to Buy: Sleek midi dresses, jumpsuits, blazers.
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Style Tip: Their wide-leg jumpsuits pair well with heels and a box clutch.
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Sizing Insight: Runs true to size—check your bust, waist, and hip on Tellar’s Size Lookup.
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Shop: https://www.reiss.com
Self‑Portrait
Elegant lace, feminine silhouettes, and distinctive detailing—perfect for standout events.
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What to Buy: Lace midi dresses, cut-out satin gowns, or embellished minis.
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Style Tip: Works well for day-to-evening transitions.
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Sizing Insight: Often runs small—Tellar compares your body shape to other brands: Try it now
Ghost
Known for fluid silk and vintage-inspired silhouettes, Ghost is perfect for soft elegance and understated drama.
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What to Buy: Satin slip dresses, bias-cut maxis, flowing skirts.
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Style Tip: Try layered jewellery to elevate a clean slip silhouette.
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Sizing Insight: Relaxed fit. Use Tellar.co.uk to confirm length vs. height.
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Shop: https://www.ghost.co.uk
Whistles
Minimalist meets modern—perfect for sharp silhouettes with a feminine twist.
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What to Buy: Tailored jumpsuits, asymmetric dresses, smart co-ords.
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Style Tip: Excellent for work-to-event styling.
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Sizing Insight: May run small—Tellar compares your current brand and fit across hundreds of stores.
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Shop: https://www.whistles.com
Karen Millen
Bold, figure-sculpting, and full of statement moments—great for evening glam.
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What to Buy: Blazer dresses, corset midis, embellished gowns.
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Style Tip: Try block colour to elongate your frame.
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Sizing Insight: Structured fits—Tellar lets you check size suggestions based on your measurements.
🇺🇸 Best USA Brands for Event Wear
Reformation
Sustainable, flirty, and fashion-forward, Reformation makes occasionwear feel effortless.
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What to Buy: Floral gowns, wrap midis, cowl neck satins.
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Style Tip: Their slip styles pair perfectly with strappy sandals and a microbag.
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Sizing Insight: Accurate sizing, but check conversions with Tellar’s Sizing Tool.
Alaïa
Luxury-level craftsmanship with dramatic silhouettes—perfect for black-tie and formal events.
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What to Buy: Sculpted dresses, fit-and-flare designs, cut-out maxis.
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Style Tip: Let the shape do the talking—accessorise minimally.
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Sizing Insight: Often runs small. Use Tellar to check hip-to-waist proportions before buying.
Galvan London
Though UK-born, Galvan is a go-to across the US for sleek, minimalist eveningwear.
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What to Buy: Satin slip gowns, structured suits, halter dresses.
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Style Tip: Monochrome looks with metallic heels = modern red carpet energy.
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Sizing Insight: Tailored fits—measure before purchasing with Tellar’s Fit Library.
Zimmermann
Romantic, ruffled, and delicate—Zimmermann is a dream for summer weddings and feminine dressing.
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What to Buy: Puff-sleeve minis, floral maxis, corset gowns.
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Style Tip: Perfect with soft curls and natural makeup.
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Sizing Insight: Often runs small—Tellar lets you map your size across international sizing systems.
Alice + Olivia
Bold, colourful, and playfully elevated, perfect for fashion-forward party dressing.
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What to Buy: Peplum dresses, bold prints, colourblock tailoring.
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Style Tip: Add chunky jewellery or colour-pop accessories.
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Sizing Insight: Great for petites—check inseam, bust, and shoulder width on Tellar.co.uk.
How Tellar.co.uk Helps You Nail Sizing
Tellar.co.uk is the UK’s leading free clothing sizing tool, helping shoppers match their body measurements to sizing charts across 1,500+ brands. Whether you're petite, curvy, tall, or athletic, Tellar removes the guesswork from online shopping.
✅ No app needed
✅ Bust–waist–hip matching in CM or inches
✅ UK, US, EU sizing support
✅ Includes actual garment data where available
Start here: https://tellar.co.uk/store-size-lookup
Also explore detailed posts like:
Style Tips for Eventwear
✅ |
Key Tips |
|---|---|
Match the dress code |
Check if it's cocktail, formal, semi-formal |
Focus on one statement |
Dress OR accessory—never both |
Know your body line |
Tellar makes silhouette-matching easier |
Try layering |
Blazer over a gown? Yes—especially in winter |
Prioritise comfort |
Nothing ruins an event like an itchy dress |
Colour counts |
Jewel tones flatter evening light beautifully |
Stay Connected with Tellar
Follow Tellar.co.uk for daily size tips, trend alerts, and outfit ideas:
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Instagram: @Tellarsizing
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Twitter/X: @Tellar100
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Facebook: Tellar Sizing
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Pinterest: TellarUK
Final Word (≈860 words)
Whether you’re heading to a summer wedding in the Cotswolds, a rooftop party in NYC, or a black-tie dinner in Mayfair, eventwear is only as good as its fit. With Tellar.co.uk’s free tools and sizing insights, you can shop across 1,500+ brands and know your size before you ever click "buy".
Visit https://tellar.co.uk to make smarter wardrobe decisions, reduce returns, and find your dream fit.
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