The Bieber brood is getting bigger! Justin Bieber is about to be a big brother again—this time, to a new baby sister, sources confirm to TMZ. Justin's father Jeremy's new bride, Chelsea Rebelo, is reportedly pregnant and expecting a daughter . Chelsea is "about 16-20 weeks along," per TMZ. Earlier this week, Jeremy and Chelsea were married during a pink-themed wedding —perhaps in honor of their new daughter?—in Montego Bay, Jamaica on Monday, February 19.