Ramey

By Dylan Howard - Senior Executive Editor, Star magazine and David Perel - Editor In Chief, Star magazine

Teen pop icon Justin Bieber got a 20-year-old Californian woman pregnant during a backstage tryst and admitted it was his "first time," she claims in a sensational lawsuitobtained exclusively by Star magazine.

Mariah Yeater filed court papers saying that her sexual encounter with the "Baby" hit-maker occurred on October 25 of last year, after he performed to a sold-out crowd at L.A.'s Staples Center.

As RadarOnline.com previously reported, the woman has filed a bombshell paternity suit against Bieber, alleging he is the father of her three-month-old baby.

In a hand-signed affidavit, sworn under the penalty of perjury, Yeater wrote that a security guard working for Bieber approached her and "asked if I wanted to meet Justin Bieber" before whisking her backstage.

Bieber's rep denies the allegations, telling RadarOnline.com: "While we haven't yet seen the lawsuit, it's sad that someone would fabricate malicious, defamatory, and demonstrably false claims. We will vigorously pursue all available legal remedies to defend and protect Justin against these allegations."

Mariah claims in her lawsuit, which was filed in a California court on October 31: "After waiting for a short period of time with several young women, Justin Bieber appeared and engaged me in conversation.

"Immediately, it was obvious that we were mutually attracted to one another, and we began to kiss. Shortly thereafter, Justin Bieber suggested that I go with him to a private place where we could be alone.

"I agreed to go with him and on the walk to a private area, he told me he wanted to make love to me and this was going to be his first time.

Mariah also told the court: "After walking away from the other people backstage, Justin Bieber found a place where we could be alone -- a bathroom.

"We went inside and immediately his personality changed drastically. He began touching me and repeatedly said he wanted to f*ck the sh*t out of me. At the time I asked him to put a condom for protection, but he insisted that he did not want to.

"In his own words, he said that because it was his first time he wanted to feel everything."

Justin then "quickly took off my clothes," she said -- and the pair had sex.

Bieber’s reps strenuously deny the woman’s claims, but Yeater wrote in her court declaration: "He was on top of me with my legs around him. At the time I was on top of some type of shelf. The sexual intercourse itself was brief, lasting only approximately 30 seconds."

A court has scheduled a hearing on the matter for December 15.

Star magazine broke the exclusive story of the Bieber lawsuit and details are in the new issue -- on sale Thursday.

Getty

By Dylan Howard,
Senior Executive Editor, Star magazine

By David Perel,
Editor In Chief, Star magazine

Pop star Justin Bieber promised a 20-year-old California woman that he would invite her to attend his future concerts after they had sex, according to court papers she filed charging that Bieber is the father of her three-month-old son.

Mariah Yeater claims in the sensational court documents that Bieber, 17, is the father of tinyTristyn Anthony Markhouse Yeater, who was born on July 6. She is asking for a paternity testand financial support.

Star magazine broke the story of the shocking lawsuit in its current issue and obtained the court document, which you can read here on RadarOnline.com.

As Star magazine exclusively reported, Yeater is asking a California court to force Bieber to "undergo a paternity test to scientifically confirm that he is in fact that father of my baby" and "provide adequate support for my baby."

Bieber’s representatives vigorously deny the woman’s claims but a court hearing has been scheduled for December 15.

In the court filing, obtained by Star, Mariah alleged Bieber told her "he would give me his phone number after we had sex and told me he wanted me to be at his future concerts too and he would give me backstage passes."

She said the sexual intercourse between the pair was "brief, lasting only approximately 30 seconds."

Mariah told the story of her alleged encounter with Bieber in an affadavit sworn under penalty of perjury.

She wrote that when Justin was done, "he was clearly embarrassed about how the sex did not last very long. He immediately put on his clothes and blew me off when I asked about seeing him again.

"I asked him for his private phone number, but he insisted on taking my phone number.

Woman Suing Justin Bieber...ing Claims

"We had no paper or anything to write it down on, and Justin Bieber was clearly not interested in getting his cellphone or any paper. He said he would just remember the number, which I told him."

As Star previously reported, via RadarOnline.com, Mariah said she tried to contact Bieber through his representatives to inform them she was pregnant.

"But no one ever called me back," she wrote in her declaration.

The papers also reveal that Mariah is on public assistance. She says her encounter with Bieber happened backstage at the Los Angeles’ Staples Center last year.

For more details, pick up a copy of Star -- on newsstands now.