In 2010 a scandal that erupted when designer Mark Fast decided to use four plus-size models (US sizes 8-10) in his catwalk show at London Fashion Week. Protesting his decision, his stylist and creative director quit, leaving him just three days to find replacements.

The incident is a great example of how even relatively powerful figures (e.g., designers with catwalk shows) often have to pay a price for deviating from cultural rules. Designers are often criticized for only hiring waif-like models, but this shows that they don’t get to do whatever they like without consequences.

While it’s easy to condemn Fast’s stylist and creative director for walking out on him, the truth is that even being associated with deviance can bring consequences. Sociologist Erving Goffman introduced the idea of the “courtesy stigma” to refer to the stigma that attaches to those who are merely associated with a stigmatized person. A recent Grey’s Anatomy episode dealt with exactly this idea in a story about the reaction to an attractive blonde married to an obese man. Her willingness to stay with such a person was a source of curiosity and disbelief. Similarly, siblings of the mentally ill or mothers of children with attention deficit/hyperactivity disorder might suffer courtesy stigma when people wonder if the mental illness is genetic or the parenting is bad, respectively...