So when husband Tom Brady's sister Nancy Brady asked her to pitch in to raise money for Accordia's Infectious Diseases Institute, which helps fight disease in Africa, she was happy to oblige.
"Family is very important to me and Nancy's passion for funding Accordia's training program after her fellowship in Uganda is inspirational," says Bündchen. "We are blessed to have families that support each others philanthropic endeavors."
Bündchen and Brady's presence at the event helped bring in more than $250,000 for the cause, which Nancy Brady says "empowers more Africans in the fight against HIV/AIDS, TB and malaria."
But the fundraiser wasn't the only party Bündchen, 30, and Brady, 33, had to attend. "It's Benny’s birthday, so they celebrated [Tuesday] with a small group of friends and family – and a cake," says a friend of their 1-year-old, Benjamin.
"My son is so cute!" Bündchen boasted last month. "I love hearing the little giggles. When everything is going crazy sometimes you are overwhelmed and it's so much, but when your kid smiles at you, you're like oh my God, it's all worth it."