Gisele Bundchen is reportedly expecting a boy.

The 29-year-old supermodel is due to give birth to her first child with husband Tom Brady, 32, in December and the couple are planning to call the infant Gabriel.

A source told National Enquirer magazine: "One of Gisele's five sisters is named Gabriela, and she's always thought it was a beautiful name.

"Gisele was brought up a Roman Catholic, and Gabriel is an archangel, a messenger from God, in the New Testament.

"She's also friends with Brazilian singer-songwriter Gabriel Guerra. They met in Rio de Janeiro last year, and he wrote the song 'Tribute to Gisele' for her. She liked it so much she put it on her website."

The couple are reportedly delighted by the news, and Gisele "can't stop" talking about the new addition to her family.

The source added: "Tom and Gisele didn't care if they had a boy or a girl, just as long as everything was OK with the child.

"But now that Gisele knows it's a boy, she's so excited, she can't stop telling people."

Tom - who has a two-year-old son, John, with actress Bridget Moynahan - recently spoke of his excitement at becoming a father, insisting it will be easier than his American football training.

He joked: "It couldn't be harder than this training camp, so I'll be prepared."