LAS VEGAS, NEVADA – Saturday November 5, 2011. BUSTED! A booking photo of Mariah Yeater – who claims pop star Justin Bieber is the father of her three month old baby. Yeater, 20, has filed a paternity suit against the singer alleging she became pregnant after they had sex following one of his shows. It has now been reported that Yeater was arrested in Las Vegas less than two months after getting pregnant. Records state that on December 21, 2010, Yeater committed battery by ‘slapping’ her ex-boyfriend in the face. She was arrested and posed for a mug shot and later pleaded not guilty.