Mindhole Blower: Shailene Woodley was Marisa Cooper's Sister on 'The OC'

So, I’m on Twitter, minding my own, when I see Josh Schwartz, my honeyest of boo-boos this side of Whedon, post the following:

And I’m all, oh, right, in season one, there was a different, awkward Kaitlin Cooper before she came back all hot and Willa Holland-y. So I click the link. And, holy Julie Cooper Nichol, the original Kaitlin was none other than moon cycle loving, vagina sunning child of Gaia herself, Shailene Woodley.

I realize this is not news. A cursory IMDb glance could have told me that. But, today, my world has been rocked.