Megan Fox and Brian Austin Green: mom and dad. (Jason Merritt/Getty Images)

The couple — who sort of announced in June that they were expecting by releasing photos of their tropical celebration of Fox’s baby bump — welcomed their son, Noah Shannon Green, Sept. 27. But Fox made the formal baby announcement Wednesday on her Facebook page.

“We have been very lucky to have had a peaceful few weeks at home, but I would like to release this myself before others do,” Fox said, minutes before the news began to fly around the Internet. “I gave birth to our son Noah Shannon Green on September 27th. He is healthy, happy, and perfect.”

“We are humbled to have the opportunity to call ourselves the parents of this beautiful soul and I am forever grateful to God for allowing me to know this kind of boundless, immaculate love,” she added.

In response to the news, a commenter on Fox’s Facebook page (well, one of several) wrote simply, “MILF!!!” As of publication of this blog post, it has been liked three times.

As People notes, this is the first child for Fox, 26, and the second for Green, 39, who has a 10-year-old son from a previous relationship. The two married in 2010.

Fox will be seen later this year in Judd Apatow’s “This is 40” and probably in a ton of paparazzi shots that will circulate as soon as she goes on a late-night diaper run to Target.

View Photo Gallery: Births and pregnancy announcements from excited parents and parents-to-be.