Why do some people constantly brag about their expensive clothes?

I’ve got a few friends who constantly brag about their expensive clothes—especially their fancy bras. They’re always flexing about them. It feels really weird to me. I wear expensive bras myself, but I’ve never thought of it as anything special. Have you ever noticed this kind of behavior in anyone?
Why do some people constantly brag about their expensive clothes?
Why do some people constantly brag about their expensive clothes?
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