American Idol went out with a serious bang last week, with the series finale practically bursting with the show's current and former talent. In addition to Carrie Underwood's jaw-dropping performance of "Something in the Water," fellow American Idol queen Kelly Clarkson proved why she deserved the original prize in 2002 by belting out an epic medley of her greatest hits. From "Since U Been Gone" to "Breakaway," the expectant mum's performance was out of this world. Watch Clarkson do her thing above, and check out the emotional song she performed on the show in February that left the audience in tears.
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