How normal is it for roommates to see eachother naked?

I just moved into an apartment with some friends from university. I knew them pretty well but we werent besties or anything.
Its my first time living away from home and I do like it but I was shocked at how open they are.

I mean its not like they are all just chilling in their birthday suites. But like for instance the shower has an unofficial open door policy. If someone is showering and somebody else wants to use the mirror or basin etc they will just walk into the bathroom and chat like its no big deal. I almost had a heart attack the first time it happened to me.

Or they will strip in the laundry and put their washing on and walk from there to their bedroom in the nude.

Im used to it now but I still dont know how "normal" it is.
Is this nomal anywhere?
Or am I living with a bunch of crazies?

Ps we are all women
How normal is it for roommates to see eachother naked?
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