It does have a certain "come hither" feel to it. Is that what creeps you?
My first reaction to this was the memory of the first stag film I saw. It was a 16mm black and white film shown to me by the projectionist at a Catholic Girls High School. Can you imagine that? When the guy came into the scene he was naked with black socks. This is no reflection on you but it was just what this image triggered in me. Ask me about it sometime. LOL.