People have plenty of preconceived notions about sorority sisters—that's what Legally Blonde is all about.
A sorority hosted a formal to celebrate the end of the school year, and students from outside of the sisterhood were invited to join. One student railed against the group while drinking their wine, and a sister wasn't having it.
My (21F) sorority rented out a lodge complex to throw an end-of-year wine-tasting formal. We allowed students who aren’t in the sorority to attend because of the special occasion, even though we paid for the whole thing.
I was talking to a girl who was drinking all the wines, and she kept saying “I’m here for the wine, but I don’t like sorority girls.” And other snide comments about our feminine decor and use of the color pink. She knew I’m in the sorority. Others girls had already complained about her attitude.