Wife and I are nudists, but sister is comming for a visit, what should we do?

My wife and I are both nudists/naturists. We love to be at home nude all the time. My sister is comming in a few days for a visit. Havent seen her for 7 years. I dont want to shock her, but its going to be hard to have cloths on all the time except at bed time. whats should we do? Should we just put up with it and wear cloths the time she is here? Should we ask if it ok for us to be nude? Should we say if she wants to be nude its ok to? Or should we just act like nothing and keep our cloths on? I dont want her to feel that we are weird or anything, and no, I do not have any desire to have sex with my sister. So, what do you think?