Tito Jackson thinks motherhood makes his sister Janet "feel complete".
The 'Rhythm Nation' singer welcomed son Eissa into the world in January and her brother Tito has revealed Janet just adores being a mother.
He said: "She's doing all the baby talk to the baby and playing with him constantly - all that stuff. She changes all the diapers - she does it all. She's a real mother.
"She loves it. I asked her, 'How are you getting along with this?' and she said, 'Tito, I love it.' She just loves her baby. She's great at being a mother. It's really great. I guess it sort of makes her feel complete."
And 63-year-old Tito finds it "really different" seeing Janet as a mother as she has always been the baby in the family.
He added to People magazine: "It was really different for me to see her as a mother. It's her first baby and she has always been the baby in our family, so that was a little strange in itself!"
Meanwhile, it comes after a source claimed Janet was moving back to Los Angeles to be close to her family following her split from her husband Wissam Al Mana.
A source said: "Los Angeles has always been home for Janet and she is enjoying having her family so close. It's especially important to her because she wants her son to have a close relationship with her mother and family. Everyone is so happy to have her back home [in Los Angeles]."
Janet is in "good spirits" at the moment, according to her make-up artist Preston Meneses.
He said: "I think Janet is ready! She is happy and is in good spirits. I think the world is going to get something really special from her. She's really excited. We all are - a lot of us have been working together for years so when we come together, it's just like being with your family and when you work with your family, things just come easy and it's a wonderful experience. Right now, I just feel like the universe put us all together for another moment. I think it's going to be a very successful tour."