Justin Bieber accused of being baby's daddy

Well belieb it or not, that’s what one 20-year-old woman in California is claiming in the latest issue of Star Magazine.

Mariah Yeater told the magazine Bieber is the father of her 3-month-old baby boy, and she said she has filed a paternity lawsuit against the pop icon to prove it. She is asking the court to force the 17-year-old singer to support her child, Star reported.

In a signed affidavit, Yeater said she was 19 when she and Bieber met and had sex backstage at one of his shows in Los Angeles.

Bieber’s representative spoke out against the story, telling E News:

"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."

Though Bieber has not addressed the allegations directly, he tweeted a message to fans early Wednesday.

“All the rumors . . . the gossip . . . I’m gonna focus on the positives . . . the music.”

Bieber is currently dating Disney star Selena Gomez, 19, and the two recently adopted a puppy together in Canada.