Is it permissible for a woman to display her allurements before Muslim women if her clothing covers her 'awrah, and does the husband's mother have the right to prevent her son's wife from doing so?

It is not permissible for a woman to appear in tight clothing that describes her awrah (intimate parts) and charms, even in front of other women. A wife is not obligated to obey her husband's mother, but it is incumbent upon every Muslim man and woman to refrain from evil out of obedience to Allah Almighty and His Messenger, peace and blessings be upon him.