Dr. Bailey Pregnant?

So I just read that Chandra Wilson, who plays the fantastic Dr. Bailey on Grey's Anatomy, just had a baby boy on October 30th. Um, did anyone else know that she was even pregnant? Guess, I missed that one.
Congrats Dr. Bailey!!!

Update: Just figured out why Bailey hasn't looked pregnant this season...she wasn't. Most of this season's episodes were filmed as part of Season 1. From what I understand, all the episodes up until the one that had Meredith waiting for McDreamy and his answer in the bar, were shot last year as part of Season 1. Since Grey's came in as a mid-season replacement last year, only half of the episodes shot actually aired.

(Source)