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Ozzy Osbourne’s official cause of death has been revealed. The rock icon passed away from a heart attack, according to a death certificate obtained by multiple outlets on Aug. 5.

Originally appeared on E! Online

Kelly Osbourne is stepping out for an important cause.

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The "Fashion Police" alum made a rare public appearance in Birmingham, U.K., to accept the Lord Mayor’s Award and a book of condolences on behalf of her late dad Ozzy Osbourne , who passed away at age 76 in July.

For the Dec. 3 outing, Kelly Osbourne, 41, paired her all-black ensemble with a matching hairbow and her dad's signature round-rimmed sunglasses as she posed alongside the Lord Mayor of Birmingham Zafar

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