Kelly Rowland was on stage in Washington D.C. when she briefly broke down in tears while performing her latest single "Dirty Laundry."

That's the song about how Kelly felt towards Beyonce when she left the group Destiny's Child. Obviously, Beyonce's career soared and Kelly's did not after the break-up.

Kelly sang the line, quote, "Turnin' me against my sister.  I missed ya" . . . and then stopped, hunched over, and put her head in her hands.  After about a minute, she composed herself and continued the song.

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