Mariah Yeater: "My Allegations Are True!" (DETAILS)

Mariah Yeater is fighting back and she's ready to prove to the world that Justin Bieber is the father of her child.

DETAILS: Justin Bieber Will Take A Paternity Test To Prove He's NOT The Father

In an exclusive interview with Insider, the 20-year-old who claims she had sex with the 17-year-old "Baby" singer after his concert in Los Angeles, insisted "It'll show in court to prove that my allegations are true."

Also in the interview which can be seen below, Yeater says Bieber “went from cute and gushy to just ... more aggressive,” prior to having sex.

PHOTOS: Mariah Yeater Shows Off Justin Bieber's Alleged Baby

We'll have more interviews and more breaking news as Justin Bieber has agreed to take a paternity test to prove he is not the father of Yeater's 4-month-old.

It's just a matter of time before the truth comes out. Who do you believe, Mariah or Justin?  

Photos

Mariah Yeater Shows Off Her Alleged Baby With Justin Bieber (PHOTOS)