What is the ruling on a woman who is fully adorned (mutabarrijah) in her home before prayer?

If the question refers to a woman uncovering herself in her home when alone without need, this is prohibited because of the Prophet’s (peace be upon him) saying: “Allah is more deserving of being shy from.” Thus, the awrah must be covered even when one is alone, and this applies to both men and women, being more emphasized for women. As for her prayer, it is valid if it fulfills its conditions and pillars, and her uncovering herself before or after the prayer does not affect it.