Buzz's girlfriend is a girl mentioned in Home Alone."Buzz, your girlfriend! Woof!""―Kevin, seeing a picture of Buzz's girlfriend
In the first film, she was shown in a picture when Kevin was looking through Buzz's stuff. She wears headgear and had a shocked expression. Kevin was disgusted upon seeing her picture.
The "girl" in the picture was actually a boy made up like a girl, because director Chris Columbus thought it too cruel to humiliate any real girl in such a fashion.