Some women may not get along with their future mother-in-laws, but if Kelly Clarkson marries her boyfriend Brandon Blackstock , she won't have that problem.

That's because Brandon's stepmother is country music superstar Reba McEntire , who's a close friend of Kelly's.  Reba's husband Narvel -- Brandon's dad -- is Kelly's manager, and Reba and Kelly have performed and recorded together.  The country star considers her a member of the family already. 

Reba tells USA Today , "Before she and Brandon started dating...every time Narvel and I would get a group together [for a vacation], we'd call Kelly, she'd go as a single, she didn't care.  She was our kid, she was my little sister."

But if Kelly and Brandon marry, that will make Reba Kelly's stepmother-in-law, which, Reba says, "I'm fine with."

Though Kelly has joked that she wanted to marry Brandon when she first met him, the two currently have no plans to wed.

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