Flannel shirts continued to enjoy regular rotation among the citizens of Seattle and Portland, home to seminal grunge bands like Nirvana, Hole, Pearl Jam, and Soundgarden.

The original Nirvana smiley face T-shirt design, left, and the Marc Jacobs Bootleg Grunge tee. (Shop.Nirvana.com, MarcJacobs.com Photos) Just when you thought 25 years might be enough time for ...

Flannel shirts are one of those wardrobe staples we all take for granted. Like jeans, T-shirts, and sneakers, it seems everyone has at least one in their closet (and lately celebs are gaga over them).