A sister sanderson is someone who stans skinny legends but also any legend because they aren't mean. They also are super energetic and love to be silly and sometimes get out of hand. They are usually smart or get decent grades. A sister sanderson gets all the boys.
Malayna: oh my gosh you have so much energy

Me: ya I have too many boyfriends too
Malayna: oh you are a sister sanderson
by Sk8girl87 October 31, 2018
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