Producer and rapper Jermaine Dupri has become a big brother at the age of 40.

The hip-hop star posted two photos of himself and baby sister Sunny on his blog on Tuesday (09Oct12), although he did not reveal whether the tot was a new addition to his mother Tina Mosely's family or his father Michael Mauldin's.

Alongside the pictures, he writes, "me and my little sister sunny... it feels kinda crazy having a baby sister".