Limit that stuff to her room and tell her to at least wear boxers and a tank top if she wants to trot in almost nothing.
I personally think it's disrespect.
Let her know that she can do all that nakedness when she has her own place. I think she's testing her limits with your household.
Maybe it could be an excuse so when she decides to dress provocative, her excuse will be "BUT you guys don't mind if I'm naked at home! I'm covered up this way!"
Teenage girls wearing just underwear is totally normal in their own house with their families or home alone. I'm now 17 and the only period of time I didn't do this was from about 12-15 when I was least comfortable with my body. So if she's doing this and just going about things, it's normal. If she's doing it when there are other people in the house or standing by windows or not wearing any underwear, it's not as normal and if people in the house aren't comfortable with nudism, then it's not ok for her to do that. Explain the difference between these scenarios to her and I agree with SadMostOfTheTime (44895) that asking her to wear boxers or tank tops is a good idea as it will give her comfort and a bit of freedom but isn't as revealing. :)
I personally think it's disrespect.
Let her know that she can do all that nakedness when she has her own place. I think she's testing her limits with your household.
Maybe it could be an excuse so when she decides to dress provocative, her excuse will be "BUT you guys don't mind if I'm naked at home! I'm covered up this way!"