Mel B's former nanny has accused the pop star of plying her with alcohol when she was an 18-year-old student and encouraging her to have sex with the Spice Girls star and her husband.
The new allegations appear in a defamation suit filed by Lorraine Gilles, who claims the Wannabe singer, who is now an international TV personality, seduced her when she was a teenager and is now trying to suggest Gilles is "a homewrecker, prostitute, and extortionist", amid her divorce from Stephen Belafonte.
According to the new lawsuit obtained by TMZ, Gilles accuses Mel B of defaming her by claiming she was having an affair with the singer's now-estranged husband, who got her pregnant and then convinced her to have an abortion.
The couple's former nanny insists it's all lies, apart from the tales of three-way sex.
In her legal papers, Gilles details a conversation she had with her former employer, Mel B, who got her drunk and suggested a three-way.
The former nanny went along with the sex sessions but insists she never engaged in any sexual acts "without Brown's knowledge or participation", and at no point did she claim she was pregnant with Belafonte's child.
Previously, Mel B claimed Gilles and her estranged husband have teamed up in a bid to extort the ex-Spice Girls star over sex tape footage and memorabilia, which they've hoarded at a secret storage unit in Los Angeles.
The star has won restraining orders against both Belafonte and Gilles to prevent them from releasing sordid videos and images that could ruin Mel B's reputation.
Belafonte's legal team have now filed new documents in which they allege that Mel has been deliberately trying to get her children on her side, with the producer alleging that when he last saw Angel and Madison, they told him: "Mommy is really mad at you and that's why she won't let us come and see you," according to TMZ.