Prosecutors’ star witness returned to the stand on Wednesday to continue her testimony in ex-partner Sean "Diddy" Combs' criminal trial.

The day's testimony began with Sean Combs' longtime ex-girlfriend detailing the bruises and black eye she says she was left with after a vicious beating from Combs that was caught on surveillance video at a Los Angeles hotel in 2016.

Cassie Ventura took the stand amid her third pregnancy to testify against her ex Sean “Diddy” Combs in his sex trafficking trial on May 13.

Star witness in the government’s sex-trafficking prosecution of the hip-hop mogul testified that he attacked her and blackmailed her with videos of sex parties as a means of controlling her.

Cassie Ventura returned to the stand today for more bombshell testimony as the government's highest-profile witness in the trial against Sean "Diddy" Combs. NBC News' Chloe Melas reports from outside the courthouse about Cassie revealing Diddy's jealousy over her relationship with Kid Cudi and his sharing an explicit video of her with other people.

Cassie testified Wednesday that she developed a drug addiction from Sean "Diddy" Combs' hours and days-long "freak off" sex parties.

Casandra 'Cassie' Ventura said Sean 'Diddy' Combs physically abused her and gave her a black eye before her movie premiere.