Is it permissible to leave clothes as they are for prayer and other (occasions), if they are —originally not tight— but they contour the body and appear tight when sitting, moving, or in certain postures?

A woman should wear clothes that do not describe the size of her limbs, and the garment should be loose and wide, not constricting her movement or sitting. If the garment becomes tight due to an external factor, such as wind, there is no sin upon her, because Allah does not burden a soul beyond its capacity, and what becomes apparent from her without her intention to show it is not held against her.