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How to Choose Your Oversized T-Shirt Size (With Real Measurements)

How to Choose Your Oversized T-Shirt Size (With Real Measurements)
Updated October 14, 2026

Buying an oversized tee online is harder than buying a regular one, because a size M from one brand can fit completely differently from another. The label size tells you very little. Measurements tell you everything.

Step 1: Ignore the size letter, read the chart

Oversized tees are cut wider on purpose, so the size letter does not mean what it does on a standard tee. Look at the garment measurements in the size chart, mainly chest width, length and shoulder width, and compare them with a tee you already own and like.

Step 2: Measure a tee you already like

Lay your favourite tee flat. Measure across the chest from armpit to armpit, from the top of the shoulder seam to the hem, and across the shoulder seam. Then compare these numbers with the chart. This is the most reliable way to avoid guessing.

Step 3: Decide how oversized you want it

RVB top size chart (in centimeters)

RVB cuts its pieces in an intentionally oversized, unisex fit. These are garment measurements, and because each piece is cut and finished by hand in Saigon you can expect around 1 to 2 cm of variation between pieces.

SizeChestLengthShoulder
S108 cm68 cm58 cm
M114 cm70 cm60 cm
L120 cm72 cm62 cm
XL126 cm74 cm64 cm

How to measure your own body

Add room for the look you want. A tee with 20 to 25 cm of extra chest room over your body measurement will read as clearly oversized. Less than that gives a relaxed fit, more starts to look very boxy.

Common mistakes

If you are between two sizes, message the brand with your measurements. RVB's team will help you pick on the Help or Contact page.

Pieces mentioned in this guide

Áo CALLIGRAPHY Boxy T-Shirt WHITEÁo CALLIGRAPHY Boxy T-Shirt WHITE Áo JUST BASIC T-Shirt WHITEÁo JUST BASIC T-Shirt WHITE

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