sororiatric
(n) a woman who belonged to a sorority throughout her undergraduate college experience and, despite her subsequent "maturity," still acts like a sorostitute; can typically be found wearing too tight jeans, tube tops, designer glasses, and an abundance of make-up; other identifying markers include an overuse of "like" and "yeah," cheap beer, and the company of overweight frateriatrics
She was a Tri Delt in college but now she's just an unattractive sororiatric.