Valleywag's Owen Thomas has word that San Francisco First Lady Jennifer Siebel is pregnant. Now, this rumor pops up every few months, but since Thomas is a trustworthy source on all things tech and gossip, we kinda believe him. Then again, pooping out a slimy brat means getting fat -- and believe us, neither Jen nor Gavin want that -- so we'll wait to hear from the Newsom PR machine to tell us if a blessing is, in fact, on the way. (Also, no denial on Newsom's correction page yet. Ack! We can hardly stand it! Is there a bump of the baby variety swimming inside Jen's belly? Will Anne Gedde do the official portrait? How big will the trustfund be? It's all so very The Insider! Where's Lara Spencer when we need her most?!) UPDATE: It has been confirmed.