The 31-year-old, who will walk the ramp seven months after she gave birth to her son, said her daughter is already a pro at modelling, reported Us magazine.
"She does the runway by herself -- she knows how to do everything. She's like a little pro already. She likes to sing around the house.
That's her thing," said Ambrosio.
The model raises the kids with fiance Jamie Mazur.
The mother of two also says her daughter has had a built-in audience - her new baby brother, Noah.
"Anja loves to entertain Noah. She's all about singing to him and just performs for him. There is always noise in the house and there is always something happening. My life is never boring."