Gisele Bundchen and Tom Brady are expecting their second child together, a source has confirmed to Us Weekly.

"Yes, she is pregnant," says the source. "Three months [along]. They are really happy!"

For now, she doesn't seem to have much in the way of a baby bump to conceal (there is something there, though), but that will probably change soon.

Their new baby will just be the latest addition to their family. Tom and Gisele already have a two-year-old son, Benjamin, and Jack is their 4-year-old son from Brady's ex-girlfriend Bridget Moynahan.

"I want more kids for sure, but I don't know when," she told British Vogue, in late 2010.

Well, guess we know the answer to that question now.