Although the 30-year-old supermodel - who gave birth to son Benjamin, her first child with husband Tom Brady, in December 2009 - initially found it difficult to adjust to being a parent, she now can`t imagine her life without her baby.
She gushed: "I love being a mother. It is challenging and it is different when everything is not about you and your life - now there is someone much more important. It takes some adjusting, but it is so, so wonderful."
Gisele - who married New England Patriots quarterback Tom in February 2009 - also revealed she is happy she waited to find the right man before having a baby.
Speaking about 33-year-old Tom - who also has a three-year-old son, John Edward Thomas with his ex-girlfriend Bridget Moynahan - Gisele told the New York Post newspaper: "My son is so beautiful, I love him so much. But before you have children, you have got to make sure you`ve got a great man. You can`t settle for less - someone you love, and someone who has the same beliefs."