Don't sleep naked. Just wear your underwear, which isn't normally to confining or uncomfortable for sleep. I, personally, don't find it to be any way.
If you have a lock on your door, put it to use and, if not, ask your parents about getting one perhaps. Should you have a younger sibling, use them as an excuse as to why you should get one.
Set your alarm so that you will always be awake, and dressed, before they get out of bed.
Depending on how embarrassing you would deem it, perhaps try just telling them. I mean, most parents wouldn't be too bothered about your sleeping habits.
Always cover yourself in your blanket.
Personally, I would just speak to one of your parents and say that you find sleeping naked a much more comfortable experience. Pull in some nonsense about how it will help you get a better quality of sleep and because of it you'll be able to perform better at school or something. Should they agree to this, which I think they will unless you share a bedroom with a sibling, ask about getting a lock to prevent some embarrassing incidents (depending how comfortable you are about being "exposed" around your parents).
wel ya but i allready sleep in boxers Hollister and co exactly all the time just because it is to hot in colorado to weaar blankets that is USA and i want naked not boxers
I always sleep naked. When its hot in the summer I generally just sleep under a sheet. If its really hot I might throw that off too. No one's likely to come in to my room before my alarm clock wakes me up.
If it is hot, then naked is the way to go. Your room should be your private space and if your 'rents come barging in and find you naked that is their problem. However if you tell them that is what you intend to do and the reason why, they will probably be quite OK with it and it will save embarrassment all round. I sleep naked almost all the time. .
I just mostly sleep in my boxers and most of my friends do that or naked. I personally just don't like it but that's just me. If you're worried about them seeing you then either let them know or just don't do it. I'm used to people seeing me either naked or in underware all the time but still find it really akward around my parents.