What size Charles Tyrwhitt shirt am I?
Fact-checked 2026-09-29 · every claim links to its source below
What Charles Tyrwhitt publishes
- The formal-shirt chart is the one in this whole facet that prints body and garment side by side: its columns are literally "YOUR CHEST" / "SHIRT CHEST" and "YOUR WAIST" / "SHIRT WAIST". Nearly every other brand publishes one or the other and leaves you to guess which.1
- Because both columns are there, the house ease is readable rather than inferred. At a 16" collar, Classic Fit: your chest 42 → shirt chest 47.5, your waist 36 → shirt waist 47. Slim Fit at the same collar: 42 → 46 and 36 → 43.1
- Collar range is 14"–20" (≈35–51 cm), published in both units; the US and UK sites lead with inches, the EU sites with centimetres.1
- The collar number already includes ease, which is why it feels true to tape. The brand's instruction: "Measure your collar size by placing a tape measure flush around your neck; place two fingers between tape measure and neck to get the most comfortable fit." Buy your measured neck, not a size up.3
- Sleeve is measured the US way — "measure from the top of the centre of your back just below your collar, and along your whole arm" — so a Charles Tyrwhitt sleeve number is centre-back-to-cuff, not armhole-to-cuff.3
- Suit jackets get a different kind of chart: garment measurements only, with no "your chest" column. Classic runs chest 36–48, Slim 36–50, Extra Slim 36–46, each with Short / Regular / Long on most sizes.2
- Casual shirts abandon the collar system entirely for S–XXXL with the collar inches given only as a translation, and those figures are garment measurements. The trap: a 16" collar is a Classic L, a Slim L and an Extra Slim M — the same neck lands on a different letter in each fit.4
The fits, and what separates them
- Four shirt fits, in the brand's own words: Classic "GENEROUS-CUT SHIRTS. Traditional Jermyn Street style"; Slim "REGULAR-CUT SHIRTS. Our most popular fit… lightly tailored"; Extra Slim "NARROW-CUT SHIRTS"; Super Slim "CLOSEST-CUT SHIRTS. The slimmest of Tyrwhitt fits."3
- Charles Tyrwhitt labels its own "Slim" as the REGULAR cut. A shopper who reads "Slim" as slim and sizes up is making the error the brand's own copy warns against.3
- Between Classic and Slim the chest barely moves (5.5" ease down to 4") while the waist loses 4" (11" down to 7"). The waist is where the fits actually differ.1
- Jacket fits differ by length and cloth over the same drop, not by a slimmer waist grade: the published drop is 6 inches in every fit (chest 36 → waist 30, chest 48 → waist 42). The guide also notes the "Modern Jacket is 0.5" / 2 cm shorter from the back Length" — a length variant, not a fourth fit.2
What buyers and reviewers report
- Consensus among reviewers is that the labels run slim against American shirt brands: "Charles Tyrwhitt shirts run noticeably more fitted than some other brands — considerably slimmer than Brooks Brothers."5
- A useful honesty check: the same reviewer measured a Classic 20" collar shirt at a 63.5" garment chest, which matches Charles Tyrwhitt's own published 63.5" exactly. The chart is accurate to the garment.5
- The same review states only three fits are currently sold (Classic, Slim, Extra Slim) and describes Super Slim as discontinued, while the brand's sizing guide still lists it. Treat Super Slim as legacy or limited rather than gone.53
Sleeve, hemming and getting it wrong
- Sleeve bands offered are Short 32–35", Regular 33–37", Long 35–38" and Extra Long 37–38", and which bands exist varies by collar size — Extra Long appears only from about a 15.5" collar upward.1
- For an in-between arm, Charles Tyrwhitt will shorten sleeves up to 3 inches, adding up to 4 days to delivery.1
- Returns: a 6-month window. "Our fantastic 6-month quality guarantee means you are able to return or exchange part (or all) of your order." Exchanges are "always free of charge"; a refund carries a $9.95 return-shipping deduction on the US site.67
| Collar | Your chest (body) | Shirt chest — Classic | Shirt chest — Slim | Classic / Slim waist ease |
|---|---|---|---|---|
| 15" | 38 | 43.5 1 | 42 1 | +11" / +7" |
| 15.5" | 40 | 45.5 1 | 44 1 | +11" / +7" |
| 16" | 42 | 47.5 1 | 46 1 | +11" / +7" |
| 16.5" | 44 | 49.5 1 | 48 1 | +11" / +7" |
| 17" | 46 | 51.5 1 | 50 1 | +11" / +7" |
| 17.5" | 48 | 53.5 1 | 52 1 | +11" / +7" |
| 18" | 50 | 55.5 1 | 54 1 | +10.5" / +7" |
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Questions people ask
Do Charles Tyrwhitt shirts run small?
Against American brands, yes in the sense that the cut is closer — reviewers call them "considerably slimmer than Brooks Brothers" 5. But the collar number is true to tape, because the brand tells you to measure with two fingers under the tape 3. Size the collar honestly and choose the fit by how much waist ease you want: +11" Classic, +7" Slim 1.
Is Charles Tyrwhitt Slim Fit actually slim?
The brand itself calls Slim its "REGULAR-CUT" shirt and its most popular fit 3. Extra Slim is the narrow cut and Super Slim the closest 3. Sizing up out of Slim because the word says slim is the most common mistake here.
What is the difference between Classic and Slim at the chest?
About 1.5 inches of finished chest at the same collar — 47.5" versus 46" at a 16" collar. The waist gap is much bigger, 47" versus 43" 1.
Can Charles Tyrwhitt shorten the sleeves?
Yes, by up to 3 inches, with up to 4 extra days on delivery 1. There are also four sleeve bands — Short, Regular, Long, Extra Long — though not every band exists at every collar size 1.
Sources
What Charles Tyrwhitt publishes
- Sizing Guide — Formal Shirts — Charles Tyrwhitt, 2026-09-29brand-stated
- Sizing Guide — Suit Jackets — Charles Tyrwhitt, 2026-09-29brand-stated
- How to find your perfect shirt — Charles Tyrwhitt, 2026-09-29brand-stated
- Sizing Guide — Casual Shirts — Charles Tyrwhitt, 2026-09-29brand-stated
- How do I return an item? — Charles Tyrwhitt help centre (US), 2026-09-29brand-stated
- Returns information — Charles Tyrwhitt, 2026-09-29brand-stated
What buyers and the press report
- Charles Tyrwhitt review — Shirt Detective (updated 2026-09-18), 2026-09-29third-party
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