Seth Rogen turns 27 today. Actress Emma Thompson is 50. Jason Sehorn, the former NFL cornerback and husband of Angie Harmon, is 38. Olympic swimmer Dara Torres is turning 42. Songwriter Linda Perry is 44. Socialite Jamee Gregory turns 60. And Harry Potter star Emma Watson turns 19 today.

The pitter-patter of little feet is getting kind of annoying today at Defamer HQ, where news of not one, not two, not three, but four celebrity pregnancies and/or births have us hand-delivering sex-ed pamphlets to front desks everywhere from CAA to ICM. Even in this uncertain era of creative gas-rationing and looming SAG strikes, Hollywood seed is flying, and nowhere is it landing more conspicuously than in the always-competitive sphere comprising Matt Damon, Ben Affleck and Jennifer Garner; just when Damon and wife Luciana had welcomed Gia Zavala Damon into the cruel, cruel world, Garner confirmed her pregnancy with her and Affleck's own second child. Then, as the rivals regrouped to plot their escalation, Gwen Stefani and Gavin Rossdale went and blobbed at Cedars-Sinai: