Cat pictures

Here are 4 pictures of a beautiful stray cat we found outside our door. A while ago while my wife and I was watching a movie, we heard a cat making noises outside our door. I was annoyed so I opened our door and the cat just came in. It was cold so I guess she wanted to be inside where its more comfortable. We never had a stray cat before and we didn't know what to do so we just let it hang in our house. I also checked for a collar but didn't find any. Few days ago I remember seeing lost cat signs at the mail room so I went there to check it out but all I found were pictures of found cats.
We decided to post her picture at our door and at the mail room and hope the owner to see it.  For now,she's our car visitor.