The mother of a Justin Bieber fan has launched legal action against the pop superstar, insisting he's the reason her hearing has been damaged.

Justin Bieber gets an unusual complaint from a fan's mother
Stacey Wilson Betts and her daughter were in the audience at Bieber's concert in Portland, Oregon in July, 2010, and she claims the crowd noise and the music were so loud, she was left with tinnitus, a constant ringing sound in her ears - which she still suffers from two years later.
Betts is suing Bieber, his record company, the concert promoter and the arena in which the show took place for $9.23 million (£5.98 million) in damages, according to TMZ.com.

This is the second unlikely lawsuit to hit Justin Bieber in the last year
The concert-goer claims the sound created by shrieking fans became unbearable when Bieber climbed into a "heart-shaped aluminum (sic)/steel gondola" which was pulled into the audience.
Betts alleges the pop star "created a wave like effect of screaming by pointing into various sections of the arena."
In legal papers she adds, "(He) then enticed the crowd into a frenzy of screams by continuously waving his arms in a quick and upward motion", stating that the gondola acted as a "sound conductor creating a sound blast that permanently damaged both of my ears".
Last year saw Bieber face off a lawsuit by a fan, claiming that he was the father of her unborn child...more here.
The Bieber in all his various incarnations of glory...
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Musicians Usher, left, and Justin Bieber arrive at the 22nd Annual Kids' Choice Awards on Saturday, March 28, 2009, in Los Angeles. (AP Photo/Chris Pizzello)
Musicians Usher, left, and Justin Bieber arrive at the 22nd Annual Kids' Choice Awards on Saturday, March 28, 2009, in Los Angeles. (AP Photo/Chris Pizzello)
Justin Bieber performs at the Pepsi Superbowl Fan Jam Concert in Miami Beach, Florida.
Teen pop sensation Justin Bieber performs with Drake at the Juno Awards Sunday, April 18, 2009
Canadian singer Justin Bieber performs live in concert during the NRJ showcase on the 1st floor of the Eilffel Tower in Paris, France
Paris Jackson and Justin Bieber during a ceremony honoring the late Michael Jackson with Hand and Footprints in Cement, held at Grauman's Chinese Theatre, on January 26, 2012, in Los Angeles.
Canadian singer Justin Bieber performs live during a showcase at the Universale Headquaters in Paris, France.
Justin Bieber arrives at the Grammy Awards on Sunday, Jan. 31, 2010, in Los Angeles. (AP Photo/Chris Pizzello)
Justin Bieber poses for photographs before a personal appearance at HMV in Westfield, west London. Over 1,500 fans turned up to try and meet the singer.
Justin Bieber performs live on stage at the Hard Rock Cafe in Las Vegas.
Canadian singer-songwriter Justin Bieber visits LIVE@Much in Toronto on Monday, Oct. 5, 2009. The Canadian Press Images/Christian Lapid
Justin Bieber and his girlfriend Selena Gomez
Justin Bieber with one of his idols, Sean Kingston
Justin Bieber with one of his many lady-friends, Kim Kardashian
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L-R: Smokey Robinson, Prince Michael Jackson Jr., Prince Michael Jackson II aka Blanket, Paris Jackson and Justin Bieber during the Michael Jackson Hand and Footprint Ceremony with the children of Michael Jackson making the impressions using shoes and sequined glove once worn by Michael Jackson, held at Grauman's Chinese Theater in Hollywood, California on January 26, 2012.
Canadian singer Justin Bieber arrives at the Cannes festival palace, to take part in the NRJ Music awards ceremony, in Cannes, southeastern France, Saturday, Jan. 28, 2012. (AP Photo/Lionel Cironneau)
WENN | Posted: 13/07/2012 12:59 BST | Updated: 12/09/2012 11:12 BST