Miley Cyrus’ brother Trace Cyrus accused his ex-girlfriend Brenda Song of faking a cancer diagnosis, an abortion and multiple pregnancies throughout their seven-year romance.

The musician made the serious allegations against the actress on Instagram Wednesday after a fan insulted him, saying, “Ahhhh now we know why Brenda left. Good riddance.”

“Yes because she stole thousands of dollars from me and faked multiple pregnancies,” Trace alleged.

Trace, now 36, further claimed that Song, now 37, “lied about being terminally ill” to make him and his family believe “she had breast cancer and a brain tumor.”

“It was all a lie,” he claimed. “She was humiliated to ever show her face around my family again once we figured it out.”

He also alleged that the “Suite Life of Zack & Cody” alum “faked an abortion with fake blood covering the bathroom floor.”

According to Trace, he and his mom, Tish Cyrus, rushed Song to the doctor, which is when “all the lies started unraveling and [they] realized it was fake.”

“Thanks for reminding me of another scenario where I was great loving another person and someone did me wrong for no reason,” he claimed.

In a follow-up Instagram Story post, Trace also alleged that Song once showed up to his home “after getting the ‘brain tumor’ removed by the best surgeon in Chicago.”

“She didn’t realize we were catching on to her lies,” he continued. “So when she showed up to my house with a bandage on her head claiming she just got out of surgery I ripped it off exposing no surgery had been done.”

“There’s more proof of how f–ked in the head child stars are,” he concluded. “I hope she’s doing better mentally.”

Reps for Song and Tish weren’t immediately available to Page Six for comment.

Trace and the “Running Point” star were involved in an on-again, off-again romance from 2010 to 2017.

The exes were briefly engaged in 2011.

In 2018, the songwriter reflected on his relationship with Song shortly after she moved on with her now-fiancé, Macaulay Culkin.

“I’m extremely happy for her. She inspired me to write countless songs and was such an important part of my life,” Trace wrote on Instagram, per Us Weekly.

“I will always cherish songs I have … to remind me of our crazy 7 years together.”

Trace was last romantically linked to Taylor Lauren Sanders from 2018 to 2020.

Song and Culkin, meanwhile, confirmed they were engaged in January 2022 when the “Dollface” actress was seen with a massive rock on her left hand.

The couple shares two sons: Dakota, 4, and Carson, 2.