Meet Justin Bieber's new baby sister: Bay Bieber!

Justin Bieber is a big brother again! "Meet the newest Bieber, my little sister BAY BIEBER," he revealed the news on his Instagram page with a close-up image of his newborn baby sister. Justin's father Jeremy Bieber and second wife Chelsey welcomed their newest addition to the family on their social media page too.

"We welcomed a healthy baby 'Bay Bieber' born at 830 am," he wrote. The couple got married at a beach wedding in Jamaica early this year and soon revealed that they were expecting their first child together.

Justin attended his father's wedding with then-girlfriend Selena Gomez, however, the couple parted ways after that. Justin is currently in a relationship with model Hailey Baldwin. The Baby hitmaker confirmed his engagement via his Instagram page in July. There are reports that the couple might tie the knot in 2019.

However, Hailey seems to be highly insecure in her relationship considering Justin and Selena's long dating history. On many occasion, the duo has got back together even after announcing their breakups.

Hailey is reportedly worried that it is hard to get out of the habit of thinking about "other woman." Selena's recent pictures on a beach vacation with her BFF apparently hints that pop star has moved on with her life. According to sources, she is currently concentrating on her professional endeavours and reportedly has no time to think about her ex-boyfriend.

Justin shares a great bonding with his father and has never shied away from showing his love and affection. This is Jeremy's fourth child—he is also father to Justing, Jazmyn (9) and Jaxon (8) with ex-wife Erin Wagner. On the other hand, Chelsey is also mother to Allie Rebelo (11).