Justin also shared a photo of baby Bay on Instagram, writing, “Meet the newest Bieber, my little sister Bay Bieber.”
The new addition is the second child for Chelsey, 30, who is mom to 11-year-old daughter Allie, and the fourth for 43-year-old Jeremy, who is father to Jaxon, 8, Jazmyn, 10, and, of course, the 24-year-old pop star.
Throughout her pregnancy, Chelsey has been updating followers on her growing baby bump.
In addition, the new mom continues to share photos of the couple’s children during family outings — most recently at the beach enjoying some ice cream and at a fast-food counter.
“Decisions, decisions 🤔,” she captioned the latter snap of Jazmyn, Allie and Jaxon.
The bundle of joy’s arrival is yet another reason for the Bieber family to celebrate following news of Justin and fiancée Hailey Baldwin‘s engagement in July.
Justin and Baldwin, 21, are quickly moving towards the altar as a source recently told PEOPLE, “They don’t want a long engagement and are already planning their wedding.”
Another insider shared that the engaged couple‘s nuptials will likely be a private affair. “As of now, they want a small ceremony with their families. They are not planning a huge, celebrity wedding. They are getting married for love and don’t want a flashy wedding,” the source said earlier this month.