@Eva,
I've got a little story:
A friend of mine attended a casual party with her husband and they wore matching running suits. While many were in jeans, no one was wearing a running suit, let alone a couple in matching suits. They looked so ridiculous, people were kind of snickering as they walked by and the wife realized it immediately and they made a quick getaway. She tried to save face later on, blaming the host for being vague about the dress but I've always believed that although it may have not occurred to her before, in that particular group it hit her like a brick how square and suburban they looked and it embarrassed the crap out of her.
They may have gone to the grocery store in the past wearing those suits but I'll bet after that night, they never wore matching running suits again!
