Girls have you ever let you brother see you in your panties?

Hi im a 22 year old male and my 19 year old sister in my roomate cause we go to the same out of state college. She always dresses super skimpy around the house, like tiny shorts and sometimes just her panties. Usually they are boy shorts but they have been thongs too. HAve you or would you ever dress like that infront of your brother or is it weird? I have not confronted her about it because she seems to enjoy it