Singer Selena Gomez arrives at Nickelodeon's 25th Annual Kids' Choice Awards on March 31, 2012 in Los Angeles, California. John Shearer/Getty Images for KCA/AFP

Selena Gomez is at the centre of a plagiarism battle amid allegations the chorus of her 2010 song “A Year Without Rain” was lifted from a little-known California band.

Rockers Luce have filed a $1 million lawsuit claiming the pop singer's track features a chorus that is "virtually identical" to their 2005 single Buy A Dog.

“A Year Without Rain”, co-written by Lindy Robbins and Toby Gad, became the title track of the teen star's second studio album with her band Selena Gomez & the Scene.

Gomez, Robbins and Gad have been named as co-defendants in the copyright infringement lawsuit, according to Courthouse News Service.