Breaking news:Usher, Obama name-dropped in Diddy’s trial as sex trafficking case heats up:see more .

Usher, former President Barack Obama, Biggie Smalls and Jennifer Lopez are a few A-list names that came up during testimony as Diddy’s jury heard from his former assistants, ex-associates and his ex-girlfriend, Cassie Ventura.

Diddy’s trial began May 5 with jury selection. Opening statements were presented on May 12, and the disgraced music mogul appeared in court to sit through testimony from Cassie, her mother, former Homeland Security Investigations agents, plus singers Dawn Richard and Kid Cudi

Sean “Diddy” Combs’ former assistant, David James, testified on May 20 that the rapper typically carried “25 to 30” undisclosed pill bottles. According to James, some of the pills were ecstasy.

“Can you describe the ecstasy that you saw him taking?” Assistant U.S. Attorney Christine Slavik asked.

Former Danity Kane singer Dawn Richard testified that Usher was at a dinner where Sean “Diddy” Combs allegedly punched Cassie Ventura in the stomach.

“We were having a private conversation, and we were all sitting, eating at the tables together,” Richard recalled during her testimony. “When I say we, I mean some Bad Boy, some of our other label, and even some celebrities were in the room. And they were secretly arguing, and he punched her in the stomach. Sean Combs punched her in the stomach.”

“She immediately bent over and then was – he was – he told her to leave because I could see him point out, and she went out and left the room,” she added.

Richard claimed music executive Harve Pierre, two of Diddy’s assistants, the rapper’s security and Kaleena Harper were present for the West Hollywood dinner. During cross-examination, it was revealed that Richard hadn’t mentioned all of the celebrities at the dinner.

“Usher was there, Jimmy Iovine was there, Ne-Yo came through,” Richard eventually added. “There were a few others, too. I don’t recall those people, but those are the ones I remember talking to.