A fashionably brain-dead person is someone who typically is wealthy, tan, dresses well, and keeps "popular" company, but who is completely unreflective and prone to drama about petty personal issues.
Did you see his fashionably brain-dead girlfriend? She's good-looking, but I think I'd stab myself if I had to talk to her for more than five minutes.

The party was good enough, but the company was a little too fashionably brain-dead for my taste.
by Bellingson April 30, 2010
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