what does the picture on the wall symbolize to gregor

Gregor felt isolated even before he turned into an insect. The woman in the picture represented his longing for a relationship with a girl. She is a pin-up girl but only a drawing. She remains a fantasy much like his longings for female companionship. She also represents affluence and wealth that Gregor could never have in his life. He worked a job he hated and had to support his family. The girl was an unreachable dream.