Gisele Bundchen is reportedly expecting a baby in December.

The Brazilian supermodel, who is married to American football star Tom Brady, has refused to confirm or deny rumours she is pregnant but it has been claimed she is due to give birth on December 14.

A source told Life and Style Weekly magazine: "Gisele has always wanted to be a mom, and she is deeply in love with Tom. This is the happiest she's ever been."

Gisele, 29, recently hinted she was ready to have a baby after revealing she loves helping to care for Tom's 21-month-old son John from a previous relationship.

She told TV show Fantastico: "I am crazy about children. I am an adoptive mother. I've already had this experience for two years."

Gisele has done little to dispel pregnancy rumours in recent weeks, after gracing the catwalk at Sao Paulo fashion week wearing baggy clothes.

She also appeared in a new advert campaign for Loewe with oversized handbags hiding her stomach.

Gisele and Tom, 31, were photographed leaving a New York obstetrician's office last month.