What is the ruling on a girl wearing tight trousers and a bodysuit in front of her male mahrams?

It is not permissible for a Muslim woman to wear tight clothing that delineates and accentuates the 'awrah (parts of the body that must be covered) in front of her maharim (unmarriageable kin). However, in front of her husband, she may wear any type of clothing—short, tight, or thin—and she may also be unclothed in front of him.