Deep breaths, Beliebers. A 20-year-old California woman claims to have given birth to a child fathered by Justin Bieber, according to a new report in Star magazine. Mariah Yeater said that she was taken backstage after an October 25 show at the Staples Center in Los Angeles last year, after being invited by a security guard to "meet" the singer. After claiming to have hit it off, Yeater says that the two had sex in a nearby bathroom. Yeater is demanding the singer take a paternity test, and filed papers with a California court on October 31. According to her account—which is detailed, graphic and makes us feel weird about The Bieb after listening to his Christmas album all day—it was the 16-year-old's first time, further complicating matters considering he was under California's legal age of consent. "He began touching me and repeatedly said he wanted to fuck the shit out of me. At the time I asked him to put a condom for protection, but he insisted that he did not want to." Our ears! Strangely, this is not the kind of baby we thought The Bieb was singing about—Jesus, Kenneth "Babyface" Edmonds or Baby Beluga always have made more sense.

"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," Bieber's reps told RadarOnline on Tuesday. First Taylor Swift, now Justin Bieber. Tabloid rumors are nothing new to celebrity life, but it's interesting to note the timing of said rumors, as well as how long it takes teen stars beginning to transition into more adult careers to become the subject of less than complimentary accusations. While Bieber has spoken publicly about waiting to be a "young dad," the timing here couldn't be better, or worse, depending on who you ask. He's in the middle of promoting Under the Mistletoe—which will likely go on to sell oodles of copies to young fans who don't get delirious from hearing holiday tunes for more than seven days straight—while also prepping another full-length LP scheduled for a 2012 release, with potential movie deals in the works. A court hearing has been scheduled for December 15. While we wait, we can expect his faithful fans to release the Twitter hounds.

[RadarOnline, Gawker]