Osetree Size Guide: How to Find Your Perfect Fit & What’s Worth Buying
Author: Stylist and brand team at Tellar
Date: 2025
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Osetree is the quiet-luxury label gaining traction with its sleek tailoring, organic fibres, and effortless polish. But while the aesthetic is clean, the sizing often isn’t. That’s where Tellar.co.uk comes in—the UK’s leading sizing tool that helps you find your perfect fit in 1,500+ brands including Osetree, in seconds.
This complete guide will help you:
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Understand how Osetree sizing compares to UK high street sizes
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Discover which Osetree pieces are truly worth investing in
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Use Tellar.co.uk to avoid sizing mistakes and get it right the first time
Why Osetree Sizing Isn’t Straightforward
Osetree designs with minimalism and precision in mind. The label often uses:
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Structured shoulders
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Cinched waists
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Natural fabrics with low stretch
Because of this, their sizing skews smaller in structured garments and more fluid in relaxed pieces like wide-leg trousers or oversized blazers. Many shoppers report needing to size up in jackets and tailored pieces, while finding true-to-size fits in loose dresses and knits.
At Tellar.co.uk, we’ve seen a consistent trend:
🧵 Osetree runs about half a size smaller than UK high street brands like Whistles or COS, particularly across the bust and waist.
What Size Should You Buy in Osetree?
Here’s the golden rule: Don’t guess. Get measured.
A UK 10 may fit like an Osetree EU 38—or it might not. It depends on the cut.
With Tellar.co.uk, it takes under 2 minutes to get a tailored size match across all Osetree styles.
Here’s how:
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Input your chest, waist, and hips in inches or cm
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Choose your preferred unit—we support both
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Receive your real-time size match for Osetree and 1,500+ other brands
Need a measuring tape? Request a free one here – we’ll post it to you anywhere in the UK.
Osetree Size Conversion: EU to UK
Osetree EU Size |
UK Equivalent |
US Size |
|---|---|---|
34 |
6 |
2 |
36 |
8 |
4 |
38 |
10 |
6 |
40 |
12 |
8 |
42 |
14 |
10 |
🟠 Caution: These equivalents don’t always reflect the cut of each piece.
Structured tailoring = size up.
Fluid silks or oversized cotton = likely true to size.
Get precise advice via Tellar’s real-time match system.
What to Buy from Osetree: Smart Picks for 2025
1. Double-Breasted Linen Blazer
A wardrobe staple. Osetree’s tailoring is sharp and narrow in the shoulders—ideal for smaller frames or those preferring a defined silhouette. Consider sizing up if layering.
2. Raw Silk Trousers
The brand’s raw silk wide-leg trousers offer comfort and structure in one. These typically run true to waist, but may be snug on curvier hips. Use Tellar to get the best match across styles.
3. Asymmetrical Knit Tops
Best-sellers for a reason. With clean lines and unexpected detailing, Osetree’s knits run close to the body. These are fitted through the bust, so your correct measurement is key.
4. The Flared Midi Dress
Sustainable modal-cotton blends, bias cuts, and a flattering flare make this a go-to for summer weddings or elevated daywear. Often true to size—but some cuts run tighter through the torso.
Is Osetree True to Size?
In short: Not always.
The brand leans into European tailoring, which tends to prioritise form over flexibility. Compared to relaxed UK labels like ME+EM or Baukjen, Osetree garments are more sculpted and precise.
Tellar.co.uk helps you:
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Know exactly where Osetree fits small
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Avoid the costly mistake of size-guessing
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See how Osetree compares to your favourite brands
Try it free here: Find your Osetree size
Why Tellar.co.uk Is the Smart Way to Shop Fashion
Tellar.co.uk is not a store. We’re an independent, unbiased sizing tool built to help you shop smarter.
🔍 We map your body to the exact cuts of over 1,500 brands—including Osetree
📏 We handle all the confusing conversions: EU, UK, US, Inches, CM
👗 We save your measurements so you can re-check any time, anywhere
📦 We help you reduce returns, waste, and frustration
Tellar is free, fast, and built for every shape and size.
Explore Other Relevant Guides:
Want to compare Osetree sizing to similar minimalist or structured brands? We’ve got you covered.
Call to Action: Get Started With Tellar.co.uk – It’s Free & Easy
Tired of returns? Confused by brand size charts? Let Tellar.co.uk do the hard work for you.
✅ Create your free profile: https://www.tellar.co.uk/create-profile/
✅ Request a free measuring tape: https://www.tellar.co.uk/free-tape-request/
✅ Log in anytime to update your size: https://www.tellar.co.uk/log-in-page/
✅ Learn more: https://www.tellar.co.uk/about-us/
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Final Thoughts: Fashion That Fits, Without the Guesswork
Osetree's clean aesthetic deserves to fit you perfectly. But fit shouldn’t be a gamble. With precise tailoring and shifting standards across brands, size charts alone aren’t enough.
That’s why thousands are turning to Tellar.co.uk—the UK’s free, easy, and intelligent tool for real-time size recommendations.
Join today and find your perfect size in seconds.