Justin and Hailey Bieber announced the birth of their first child on Friday—a boy named Jack Blues Bieber, reports the BBC. "Welcome home," the 30-year-old celeb wrote on Instagram alongside a photo of his son's foot. Hailey, a 27-year-old model and singer in her own right, reshared the post, per USA Today. As for the name, People notes the Bieber clan has a tradition of "JB" initials, including Justin, dad Jeremy, half-sister Jazmyn, and half-brother Jaxon. The birth culminates a busy stretch for the former teen star:
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