PICTURES: Spreading all over the net this weekend is Mary Kate Olsen’s Flannel Shirt Pinata Party photos. There’s Nicole Richie. And Joel Madden. And celebrities in flannel shirts smacking a pinata.

Why?

Oh, and Mary Kate Olsen smoking cigarettes.

But Why?

Imagine the pretty people of the “it” crowd. Then put them around a table that has a tablecloth like your grade school birthday party. Put everyone in tacky flannel shirts. And add a pinata. And there you have it. Perhaps the un-”it” crowd.What is it? Hilarious. And too much flannel.