Gisele Bundchen feels "very lucky" that her son and step-son get on so well.
The supermodel says 11-month-old Benjamin is in awe of his big brother, Jack - the child of her husband Tom Brady and his former lover Bridget Moynahan - and wants to be with him all the time.
She said: "I'm feeling very lucky. For Benjamin, his big brother is his hero. Jack comes in and Benjamin has a big smile. He wants to follow him around. Anything he does, he's just in awe of him like, 'Oh my God!' "
However, Gisele admits three-year-old Jack initially found it hard to adjust to having another child around because he was used to being the centre of attention.
She revealed to People magazine: "Sometimes siblings can get in each other's space. He was used to having all the attention and then when you have to share, you don't like it. Overall they really get along and I'm very lucky."
"He's amazing with Benjamin and he's the sweetest kid."
While Gisele feels so blessed to have two children that get along so well, she is already planning more kids, although not in the immediate future.
The 30-year-old Brazilian beauty - who has five sisters - said: "I want more kids for sure but I don't know when. Right now I have my hands full!"