Carrie Underwood was not nice to Leighton Meester at the CMAs?

Us Weekly has a gossip tidbit about a backstage act of meanness at the CMA Awards a few weeks ago. 


Carrie Underwood, struck a sour note with Leighton Meester, 24, at the CMA Awards November 10, a backstage source tells Hot Stuff.


“Leighton was nervous before presenting an award, and Carrie said, ‘Get out there and don’t f-ck up,’” says the insider. “It made Leighton more nervous.”


The source added, “Later, someone said to Carrie, ‘That was mean,’ and Carrie said, ‘She’ll get over it. Someone said that to me once and I got over it.’”


No official comment from Carrie on this as of yet.