Justin Bieber is being sued for $9.23 million after woman who attended one of his concerts claimed the noise of the crowd permanently damaged her hearing.

Stacey Wilson Betts took her daughter to see Justin's show in Portland, Oregon in the United States two years ago (14.07.10) when she was hit by a "sound blast".

In the lawsuit Stacey claimed it was incredibly loud inside the arena because of the pop star's shrieking fans, according to website TMZ.com.

However the 18-year-old singer apparently made the din levels increase when he climbed into a "heart-shaped aluminum/steel gondola" which dangled over the crowd.

In the paperwork, the prosecutor says he "created a wave like effect of screaming by pointing into various sections of the arena. Then enticed the crowd into a frenzy of screams by continuously waving his arms in a quick and upward motion."

She continued to explain that the gondola acted as a "sound conductor creating a sound blast that permanently damaged both of my ears."

As a result, Stacey claims she now suffers from tinnitus, which causes a constant pulsing, whooshing sound that makes it hard to sleep.

She also complains of other hearing-related damage.

Justin along with his record label, the concert promoter and the arena are being asked to settle the damages.