Justin Bieber has written a song for his new album about the woman who accused him of fathering her baby.

The 18-year-old singer has penned a track for his forthcoming record 'Believe' expressing his feelings about Mariah Yeater, a fan who claimed last year that he was the dad of her son, Tristyn, before she dropped a paternity case against him and confessed her ex-boyfriend was the child's real dad.

Justin - who always vehemently denied her accusations - said: ''There's a song about that girl that said she was gonna have my baby, Mariah Yeater. There are songs about things I'm going through. I wrote songs about different situations.''

The 'Boyfriend' hitmaker - who is a Christian - has described his new album as being a mix between Black Eyed Peas singer Fergie and Jesus Christ.

He is quoted by the Daily Mirror as saying: ''It's like a mix between Fergie and Jesus.''

Justin - who has been dating singer-and-actress Selena Gomez for more than a year - recently took to twitter to direct a tweet at Mariah, on which he attached a video clip of Sacha Baron Cohen's Borat character constantly saying: ''You will never get this.''

He wrote: ''Dear mariah yeeter ... we have never met ... so from the heart i just wanted to say... (sic)''.

The 'Never Say Never' hitmaker had previously agreed to take a paternity test in an attempt to rubbish her claims and also insisted he had never met her.

In November 2011, he explained: ''None of it is true. Never met the woman.''