Report: Brady, Gisele expecting again
"Yes, she is pregnant ... they are really happy!" the source told the gossip magazine, saying the 31-year-old beauty is three months along.
Earlier rumors had emerged that Bundchen was sporting a baby bump, but the couple have not yet confirmed the pregnancy news.
The pair, who married in February 2009, are parents to son Benjamin, aged two.
Brady, 34, also has a four-year-old son, John, from a previous relationship with actress Bridget Moynahan. They dated from 2004 to late 2006.