King James Version
And to her was granted that she should be arrayed in fine linen, clean and white: for the fine linen is the righteousness of saints.English Standard Version
it was granted her to clothe herself with fine linen, bright and pure"--for the fine linen is the righteous deeds of the saints.New International Version
Fine linen, bright and clean, was given her to wear." (Fine linen stands for the righteous acts of the saints.)