She was just sleeping over, sure she was naked, but why would she dress herself up for bed (with two people who have already seen her naked sooo many times too)?
Reminds me of this Moomin comic I read a week ago that made me laugh, the Moomins being always naked in the comics (except for minimal accessories) and seeing them dress up in pyjamas for bed, or get into a swimming suit to take a dip in the ocean made me giggle (Tove Jansson's the best).
EDIT: aah, sorry for the lack of update here! I was away for just three days and totally forgot about updating this rerun in advance, my bad! Will do so asap!
--> This is a rerun of the finished webcomic Go Get a Roomie! You can find these two strips in the old archive >here<!