My daughter wears tight clothes at home

I've noticed my daughter has been wearing revealing clothes recently, she always had an amazing figure, but lately she's been hitting the gym and her tights and ass had grown, also she's been wearing shorts and sometimes only bra or shirt with no bra. She grew up seeing me walk shirtless in the house but her mom always wear not that revealing clothes, so I don't know why is she doing this. What should I do or say?