Do London Fog women's coats run true to size?

Broadly yes, with room built in for layering. Between sizes, order the larger one for a lined coat and the smaller one for an unlined spring shell.

Should I order petite sizing?

If you are 5 ft 4 in or under, yes. Petite sizing shortens the sleeve, the shoulder-to-waist distance and the hem, which is what stops a classic-length trench swamping a shorter frame.

Sizing · 7 min read

London Fog Women's Coat Size and Fit Guide

Measure once and order once: a practical sizing guide for London Fog women's trench coats and raincoats, covering petite, regular and plus fits.

Published April 11, 2026 · Updated August 5, 2026

London Fog Women's Coat Size and Fit Guide

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Outerwear is the hardest category to buy online because the fabric is thick, the layering allowance varies, and the belt hides some but not all sizing mistakes. Ten minutes with a tape measure removes most of the guesswork.

Take four measurements

Bust: around the fullest point, while wearing the layer you'd normally have on under a coat.
Waist: at your natural waist, which is where a trench belt will sit.
Hip: around the fullest point, so a belted coat closes without pulling.
Sleeve: from the shoulder point, over a slightly bent elbow, to the base of your thumb.

Compare these with the brand's chart rather than with your dress size. Coat sizing is layered sizing; the numbers rarely match a fitted garment.

Petite, regular and plus

Fit	Typical height	What changes
Petite	Up to 5'4"	Shorter sleeves, higher waist seam, shorter hem
Regular	5'4" - 5'9"	Standard proportions
Plus	Varies	Wider through bust, waist and hip, with re-cut armholes

The most common mistake is buying a smaller regular instead of the correct petite. That fixes the length and ruins the shoulders.

Fit checks when the coat arrives

Shoulder seam sits at the outer edge of your shoulder, not down your arm.
Cross your arms in front of you. If the back pulls, you need the next size up.
Sit down and button it. A trench should still close comfortably while seated.
Belt it at your natural waist and check the hem stays level rather than hitching up at the front.
Check the hem against your usual skirts and dresses; a coat that ends mid-hemline looks unbalanced.

Layering allowance by season

For a spring shell over a shirt, no allowance is needed. For an autumn coat over a knit, add roughly two inches to your bust measurement. For a winter coat over a chunky sweater, add four. Building the allowance in beforehand is what prevents the "fits until November" problem.

What a tailor can and cannot fix

Cheap and easy: shortening sleeves, taking in the waist, moving buttons, shortening the hem. Expensive or impossible: reworking shoulders, widening the chest, changing the armhole. Buy for the shoulders and adjust the rest.