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When Miranda Lambert kicks off her Platinum tour tonight, fans may not get to hear her perform “Somethin’ Bad” – her duet with Carrie Underwood.  Miranda says…if Carrie can’t sing the song with her, she won’t do it.  According to Miranda, "It's either real Carrie or nothing to me at this point. I feel like it's such a big deal that we're singing together to me that I don't want fake Carrie or hologram Carrie or guest Carrie. I just want Carrie or no one."