Justin Bieber Shares Pic Of Dad's New Baby

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Justin Bieber introduced the latest addition to the Bieber extended family this week – a baby sister born on Thursday.

Both the Canadian pop star and his father, Jeremy Bieber, proudly shared the first photos of the newborn, Bay Bieber, on their Instagrams.

"We welcomed a healthy baby 'Bay Bieber' born at 830 am,” Jeremy captioned the post, holding the newborn above her smiling mom.

Baby Bay is the first child for Jeremy and his wife Chelsey Robelo, following Justin's other half-siblings Jazmyn, born in 2008 and Jaxon in 2009, with Erin Wagner.

"Meet the latest bieber, my little sister BAY BIEBER," Justin captioned his post.