1 definition by BabyK87

A person who is always there for you. Similar to a best friend but more, someone you hope will be in your life forever, she will be in your wedding and you two know eachother like sisters would.
Not developed with time, a person you meet and just know they are your sister friend.
I miss my sister friend, but physical distance can't keep us apart.
by BabyK87 February 25, 2010
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