Jeremy also shared the news about Bay's arrival on Instagram, posting a photo of himself, the baby and Chelsey inside the delivery room.
Justin Bieber has a baby sister.
In addition to Justin, the 43-year-old Jeremy Bieber is also dad to eight-year-old son Jaxon and 10-year-old daughter Jazmyn from a previous relationship. The 24-year-old pop singer recently announced his engagement to model Hailey Baldwin and has been spending much of the summer in Stratford, Ont., with his family.
The baby is the first for Jeremy and his wife Chelsey, who Wednesday earlier this year in Jamaica. Last month, she showed off her growing baby bump in a bikini, writing, "34 weeks".