Along with an adorable photo (above), Beyoncé wrote on her Facebook:
"Happy Birthday to my sis Kelly! ♥"
She feels so close to her that she even calls her "sis."
This only proves that if we're ever going to fulfill our lifelong dream of doing Sweet Brown impressions with our future BFF/sis, we better start working on it now because this sisterhood has been many, many years in the making!
Call you later, Bey!
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[Image via Facebook.]