I have a pair of jeans that look fabulous on me. Nice thick denim, solid black, make my butt look perfect, perfect legs (slim but not skin-tight).

Except, after a few hours of sitting at my desk, my knees hurt. The denim doesn't stretch enough at the knee, so they push against my kneecaps. And with all the abuse I inflict on my knees (Irish step dance) I absolutely can not afford things that might harm them.

So, after a few years, I think they need to go. I am so sad!

What are your surprising clothing failures? Things that failed in subtle ways that you might not even notice at first?