T-shirts manufactured today run larger than most vintage tees. Sizing may also vary from brand to brand. If you recently purchased a cotton shirt online that fits too tightly, you can easily stretch it out using common household supplies. This technique won’t warp your shirt’s design, and also works on shirts that shrunk in the washer or dryer.

Things You'll Need


Wash your shirt in a washing machine or soak it. Wring out excess water.

Lay the shirt on a flat surface.

Iron the t-shirt with an iron set to the low or medium setting. Run the iron over the fabric vertically and horizontally.

Hang the t-shirt to dry. The shirt should be slightly larger. To make it several inches larger, use the vinegar method.

Vinegar Method

Lay your t-shirt out on a flat surface. Saturate a sponge with white vinegar and dab the sponge evenly all over the t-shirt until the surface is completely covered with vinegar.

Lay your t-shirt out on a flat surface. Saturate a sponge with white vinegar and dab the sponge evenly all over the t-shirt until the surface is completely covered with vinegar.

Place the shirt inside a plastic bag, seal the bag and let it sit for half an hour.

Wash the shirt in a washing machine in hot water with detergent, using the low setting.

Place the shirt in the dryer for about an hour on high. The shirt should be considerably larger than it was before.