The singer broke down crying in court as she discussed Combs' "freak offs," a term for the mogul's alleged drug-fueled sex parties. She said that they made her feel "horrible" and "worthless" but that she continued to participate for "the one-on-one time" with Combs and out of fear that the rapper would become violent or find someone new.

Who is Cassie? Casandra Ventura is the R&B singer and actor who started testifying Tuesday in Sean “Diddy” Combs sex trafficking trial. She is known simply as Cassie.

Cassie Ventura, the prosecution's star witness, laid out in explosive detail the alleged abuse she faced at the hands of her ex, Sean 'Diddy' Combs.