Justin Baldoni’s on-screen sister is turning against the star and siding with Blake Lively and her harassment lawsuit.

Jenny Slate who starred as Baldoni’s sister in the hit film It Ends with Us is backing up Lively’s accusation stated in her bombshell legal document.

She shared how she’s not only Lively’s friend and castmate but also her loyal pal and a true leader. She referred to her as a true emotional support for all those on set and is grateful that the star is raising voices on the subject.

Blake did suffer from a horrendous attack that was terrifyingly dark and very disturbing. It’s just so threatening, she continued.

The celeb also shared that she’s honored to have Lively fight against all odds and put forward bravery to ensure all those affected by Baldoni’s behavior get justice.

The lawsuit also spoke about an all-hands-on meeting where Baldoni’s shocking behavior was discussed and slammed.

In that meeting, the movie star and director were informed and warned that he needed to stop showing the actress nude images and videos of females, which was inspired by his p*rn addiction.

He even brought up s*xual conquests linked to the cast’s genitalia that again many found offensive.

Interestingly, Lively’s husband Ryan Reynolds was also present at the meeting and many hoped that the director would get the message loud and clear.

Unfortunately, even that didn’t work.