Superstar Justin Bieber denies sleeping with Mariah Yeater, fathering her child

LOS ANGELES - A 20-year-old woman claims she gave birth to Justin Bieber’s child, but Bieber said he did not have sexual relations with that woman and that is not his, “baby, baby, baby”, according to a TMZ.com report .

The alleged Bieber mama, Mariah Yeater, filed a paternity suit against Bieber in Los Angeles Monday, claiming the two had sex together backstage after one of his concerts last year. Bieber would have only been 16 at the time.

She now wants Bieber to do right by her three-month-old.

A representative for Bieber said the story is completely fabricated.

"We will vigorously pursue all available legal remedies to defend and protect Justin against these allegations," the rep told TMZ.

The singer, who is currently dating 19-year-old Disney star Selena Gomez, denies having sex with the woman and as far as he knows, he never met her.

Bieber took to twitter to address the rumor Thursday morning.

"I'm going to ignore the rumors...and focus on what is real. An opportunity to help by doing what I love. Judge me on the music! Love ya'll!"