How strechy is silk?

Silk is not particularly stretchy compared to materials like spandex or elastane. It has a natural elasticity that allows it to recover its shape after being stretched, but this elasticity is limited. Generally, silk fibers can stretch up to about 20% of their original length before breaking, making them more resilient than many other natural fibers. However, for garments that require significant stretch or form-fitting qualities, silk may not be the ideal choice.