The singer is one of the prosecution’s key witnesses in the case against the music mogul.

Follow the latest from Sean "Diddy" Combs' sex trafficking trial in N.Y. as Cassie Ventura testifies against the artist for ...

Sean "Diddy" Combs' ex-girlfriend, the singer Cassie Ventura, took the stand this week at his sex trafficking trial in New York City.

The singer, whose real name is Casandra Ventura, became emotional at one point during her first day of testimony, saying she didn’t want to disappoint Sean “Diddy” Combs.

Sean “Diddy” Combs’s federal sex-trafficking trial and high-profile case continues on Day 3 as Cassie Ventura takes the stand and continues testifying.

Cassie will testify again about the alleged sexual, physical and psychological abuse she endured at the hands of former ...