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Singer Justin Bieber performs at the MGM Grand Garden Arena as he tours in support of his new album, 'Believe' on September 30, 2012 in Las Vegas, Nevada.
Singer Justin Bieber performs at the MGM Grand Garden Arena as he tours in support of his new album, 'Believe' on September 30, 2012 in Las Vegas, Nevada.

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    Pop stars power through onstage miscues

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Pop stars power through onstage miscues

In the RidicuList, Anderson Cooper looks at pop stars who soldier on when performances go south.

Pop stars power through onstage miscues

In the RidicuList, Anderson Cooper looks at pop stars who soldier on when performances go south.