Blake Lively vs Justin Baldoni will premiere in the U.K. on Channel 5 Monday, and on Investigation Discovery on March 31

Mia Schachter weighed in on the co-stars' on-set feud, which is at the center of their dueling lawsuits, in the new documentary "He Said, She Said."

Actress Blake Lively asked a U.S. judge on Thursday to dismiss actor Justin Baldoni's $400 million defamation lawsuit, calling it a "vengeful" attempt to weaponize the federal courts after she accused him of sexual harassment.