Diddy‘s ex-“Making The Band” singer Sara Rivers is coming at his neck in a new lawsuit, and the allegations stem from her time on the popular MTV series.

In a sprawling lawsuit, obtained by TMZ Hip Hop, Rivers claims the artist formerly known as Puff Daddy subjected her to mistreatment, which wound up becoming content for millions to see on TV.

The suit, filed by attorney Ariel Mitchell on behalf of Rivers, cites the infamous “cheesecake” from ‘MTB2’ where she and the rest of Da Band had to walk several blocks to get Diddy a sweet treat as one of the numerous incidents of abuse.

The suit also names MTV, Viacom and several ex-Bad Boy employees who had a profile on the series at the time … including Diddy’s mother, Janice, and ex-assistant Fonzworth Bentley.

Sara goes on to allege Diddy acted maliciously and recklessly with her career by publicly dismantling the group while pocketing most of her show money.

She also claims Diddy sexually harassed and assaulted her, claiming he once backed her into a corner and blocked her from moving while running his hand across her breasts.

She’s demanding damages from Diddy and the others.

The Hollywood baby boom shows no signs of slowing down, and another A-lister is proudly showing off her growing belly all over social media!

Take your best guess — who’s this glowing mama-to-be serving up a series of mirror poses to flaunt that blossoming bump?!

Michelle Trachtenberg‘s death shocked many in the film industry … and, clearly she wasn’t expecting it either — ’cause she had plans for a major appearance in the coming weeks.

Jennifer Hutchins — a producer on the film “Spyral,” Michelle’s final credit — tells TMZ … Trachtenberg was supposed to appear at a benefit screening of the movie in Austin for SXSW on March 12 to support mental health nonprofits.

Hutchins says the “Spyral” team knew she was struggling with health issues … but, if she was well enough, she planned to attend either in person or via Zoom.

As you know …. Michelle’s mother found her unresponsive in her New York City apartment Wednesday — and, first responders pronounced her dead at the scene.

Trachtenberg had a liver transplant in the months before her death … though it’s unclear if that played a part in her passing. Her family has declined to have an autopsy performed.

Hutchins remembers Trachtenberg as “one of the sweetest, most gentle human beings I’ve ever had the pleasure to know. I could tell she cared deeply about people and using her voice for the greater good.” She adds Michelle’s performance in “Spyral” was so powerful it brought people working on the film to tears. Trachtenberg was 39.