Cassie Ventura, the former girlfriend of Sean “Diddy” Combs and one of his accusers, could take the stand as early as Monday as one of the first three witnesses called in the government’s sex-trafficking case against the music mogul.

The “Me & U” singer was seen cradling her growing baby bump while waiting outside of a friend’s brownstone apartment building in Manhattan Wednesday.

In a striking development on Day 4 of Sean "Diddy" Combs’ federal trial, his defense team openly acknowledged incidents of domestic violence between the music mogul and his ex-girlfriend Cassie Ventura — but argued that the abuse was mutual.