Is it true that Good looking/Attractive people are treated better in life?

I noticed it a lot with my ex-girlfriend. She was French and was so hot and had a perfect little body and flawless skin. But inside she was malicious, stuck up, arrogant, and spared no chance to manipulate people. But because she looked so hot and had that sexy French accent, she got away with anything. People treated her much better than others in public, and she got several of her jobs (Abercrombie & Fitch, Victoria Secret, etc..) automatically just based on her looks.