Vanessa Trump 'went gangster' on Aubrey O'Day after learning about alleged Donald Trump Jr. affair: Report

Vanessa Trump reportedly called Donald Trump Jr.'s alleged mistress, Aubrey O'Day, back in early 2012 when she learned about their months-long affair.

Page Six reports that "Vanessa went gangster" over the phone on the former Danity Kane singer, leaving O'Day completely "shocked."

Back in March, reports revealed that Trump Jr. and O'Day engaged in an affair that began in late 2011 while both of them filmed the fifth season of "Celebrity Apprentice." Their relationship became so serious that Trump prepared to leave his wife, Vanessa, for O'Day and even began the process of finding a new place for them to live in together.

"When it started, he and Aubrey were very serious all of a sudden," an Us Weekly source said. "He told her it was over with his wife, that they were separated and he didn’t love her -- all of that stuff. [...] Aubrey fell for him hard. She thought they were going to be together for real."

SEE ALSO: Ivana Trump talks son Donald Trump Jr.'s 'distressing' cheating scandal

Not only that, but he also considered starting a family with his mistress.

See photos of Aubrey O'Day:

"Don told Aubrey he wanted to have a baby with her," an insider told Us Weekly. "They were trying for one."

But then, Vanessa reportedly uncovered emails between Aubrey and her husband, which made her "crazy" and "super jealous." At the time of the alleged affair, the couple shared daughter Kai, now 10, and sons Donald Trump III, 9, and Tristan, 6 (they would later welcome Spencer, 5, and Chloe, 3). Vanessa used her children as a way of shutting down her husband's infidelity.

"She called Aubrey with her kids on the phone," a source told Us Weekly.

"Vanessa said some extremely unladylike things to her," another source added to Page Six of the call, which added that "the call involved the usually demure Vanessa comparing her and childless O'Day's bodies and sexual capabilities in violently graphic terms. Apparently, this is a side of the glossy blonde she occasionally unleashes at extreme moments."

Though this apparent other side to the pulled-together mother of five may surprise some, it's reportedly a trait that she regularly showed before she started dating Trump in 2003.

See photos of Vanessa Trump and Donald Trump Jr. together:

SEE ALSO: Aubrey O’Day shares first pic after Trump Jr. affair news: ‘Embrace the shade’

In a 1998 New York Magazine article that Page Six uncovered, friends described Vanessa as a "total gangster b--ch" and "an ill thug" and revealed that she dated a "Latin King" for years, who she frequently visited at Rikers.

Additionally, in high school, Vanessa Trump was voted "Most likely to appear on 'Ricki Lake'" for her dramatic side.

For her part, Aubrey O'Day has yet to publicly comment on reports that she had an affair with Donald Trump Jr., though there have been a handful of signs over the years that the affair did in fact happen.

In 2012, O'Day released a cover of Gotye's massive hit "Somebody That I Used to Know," which featured cryptic reworded lyrics that, in hindsight, appear to call out her former lover directly.

"Now and then I think of when we were together / Like when you told me that your marriage was a lie / Told me that I brought you back to life / Couldn't live without me by your side," she mused on the remix. "Didn't care about the sex you begged to f--k my mind."

Later on in the song, the singer appeared to call out her alleged affair once more.

"But you were scared to ruin your family's name," she sang. "Your wife's the only one glad we are over."

See photos of Aubrey O'Day on "Celebrity Apprentice":