Let's get straight to it — here's what actually matters on this one.

• Untreated cotton fibers are wound under tension during manufacturing; hot water and heat relax that tension, causing the fabric to contract.
• Most shrinkage happens in the first wash — 'pre-shrunk' labeling means the fabric was treated to minimize this, but it's rarely zero.
• Cold water washing and air-drying (or low-heat tumble dry) cuts shrinkage significantly compared to hot wash and high-heat drying.
• A shirt that shrinks unevenly (tighter at the chest than the sleeves) points to inconsistent fabric quality, not just normal shrinkage.

The fit-and-fabric-health takeaway: A shrunk shirt doesn't just look off — it becomes a genuinely tighter fit against skin than the size you originally chose and tested for comfort.

Next up: check out our guide on quick fixes for sleeves that are too long.