Justin Bieber First Look: Baby Momma Mariah Yeater 1Mariah Yeater, the 20-year-old California girl who reportedly filed a paternity lawsuit against teen pop sensation Justin Bieber looks eerily like Selena Gomez. That could add some credence to her claims.

Yeater asserts in a legal papers that the teen sensation fathered her three-month-old baby and has demanded a paternity test, radaronline reports.

The story broke in this week’s Star magazine, which is owned by the same company that owns the gossip Web site.

Not much else is known about Yeater. She does not seem to have a Facebook page, and the only photo of her, so far, has been the one on the front page of the magazine. She’s pictured with her baby.

In the latest update, her grandfather Eddie Markhouse has been the only one close to her to speak out about the allegations.

He told gossip TV show “Inside Edition,” that Mariah is an “honest, good person” who would not make up such a claim, according to The New York Daily News .

“She’s basically an honest good person. She’s got a big heart. She’s a good kid and she loves this baby,” he said.

But the sensational scandal is so out of character with Bieber’s public image that it’s hard to imagine that he could have had a backstage tryst after one of his concerts.

Justin Bieber First Look: Baby Momma Mariah Yeater 2

Justin, who touts his Christian devotion, told Rolling Stone magazine in March that no one “should have sex with anyone unless you love them.”

But stranger things have happened.

Click to see photo full-size plus a photo of Mariah and baby.

Yeater claims claims the sexual tryst occurred Oct. 25, 2010. In a sworn affidavit, she claims she was invited backstage by two bodyguards after Bieber’s performance at the Staples centre in Los Angeles.

“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.

He said 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 would give me backstage passes,” the affidavit states.

The place in question, allegedly was a bathroom, according to the court papers filed in San Diego Superior Court.

“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,” she claims.

“We went inside and immediately his personality changed drastically.

“He began touching me and repeatedly said he wanted to f*** the s*** out of me. At the time I asked him to put a condom for protection, but he insisted that he did not want to.” she recounted.

“In his own words, he said that because it was his first time he wanted to feel everything,” she added.

She is said to have described the intercourse as “brief,” or about 30 seconds.

Yeater said Justin was clearly embarrassed because of his premature ejaculation. “He immediately put his clothes back on again and blew me off when I asked about seeing him again,” she stated.

When she found out she was pregnant, she said she called Bieber’s reps, but they never bothered to return her calls.

She had the baby on July 6, “exactly 36 weeks and two days after the sexual encounter.”

Yeater said she did not have sex with any other men during the intervening time.

A spokesman from the Bieber camp issued the following statement:

“While we haven’t yet seen the lawsuit, it’s sad that someone would fabricate malicious, defamatory, and demonstrably false claims,” according to TMZ.

A court hearing is said to have been set for Dec. 15. The woman is seeking child support, which likely will run in the millions of dollars.