Grieving Kelly Clarkson is being urged by friends not to rush back to her busy work schedule following the death of ex-husband Brandon Blackstock , the father of her two young kids – even if the entertainer loses out on millions by passing up projects, RadarOnline.com can reveal.

In fact, insiders said, pals believe it wouldn't be a bad idea for the brokenhearted talk show queen to briefly quit showbiz altogether until she can get her head on straight. Article continues below advertisement

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"Kelly's absolutely shattered and in no place to be performing on stage or hosting her show," an insider shared.

"That may change soon – it's a day-by-day situation. But what's more important than an

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