The engaged couple are thinking of names for their new baby, a source tells E! News, adding that Rob would like for the name to be tied to his late father Robert Kardashian.
On Friday, a source told E! News that Blac and Rob "do know the sex of their baby and will reveal it soon enough." They've been considering different plays on Robert for the baby's name; if it's a boy, Robert or Rob is an obvious top choice, but if it's a girl, an insider says Rob and Blac think Robbie could be cute. Don't monogram any baby gifts just yet, though—a source says Blac and Rob still have a few names they're discussing as possibilities.