Carrie Underwood vs. Taylor Swift?

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Carrie Underwood and Taylor Swift are still fighting in that b*tchy way that girls do, and avoided each other at Sunday's Grammys like Lindsay Lohan avoids employment. I know it's not exactly Biggie vs. Tupac, but I could easily see one of these chicks getting shot.

From Us Weekly:

Taylor Swift never, ever wants to hang out with Carrie Underwood. A source tells Us Weekly that the country stars [avoided] each other at Sunday's 2013 Grammy Awards. According to the insider, Grammy execs were ordered to keep Swift, 23, and Underwood, 29, "from crossing paths" at the Feb. 10 show "since they hate each other!"

Says a Swift pal, "Taylor feels Carrie is always rude to her, so she steers clear of her."