People News Justin Bieber announces birth of baby sister Bay Bieber 08/16/2018 Justin Bieber is a big brother once again following the birth Thursday of baby girl Bay Bieber from Justin's father, Jeremy Bieber, and step-mother, Chelsey Bieber. Read More RELATED NEWS From Tokyo to Las Vegas: Taylor Swift's flight to Super Bowl LVIII'Chucky' Season 3 trailer released by USA Network and Syfy'Quantum Leap' Season 2 visits L.A. riots, Salem Witch Trials, and more TAGS: Selena Gomez Justin Bieber Hailey Baldwin