She was intensely aware of being the only one

I guess she is the hostess.

only naked person in a room of clothed people

Showing her off nude in a crowd.

only one naked at, only one topless, only one nude sex, only one naked at the beach, only one naked fucked, only one naked nude women, only one naked shower, only one naked guy, only one nude spanking, only one naked pussy, only one nude gf