What I always wondered about are these "little sister" groups. Are they the same thing as "sweethearts?" In college I would see women wearing sweatshirts that said "XYZ Little Sis" and I always wondered why a grown woman would allow herself to be called a man's "lil sis." I understand and appreciate the concept of "big sis/lil sis" within sororities. However, I often wonder why these "little sisters" to fraternities didn't join a sorority if they were so into greek life.
I would on occassion see pledges of some fraternities perform certain actions, like kiss the hand of a "lil sis" and give her some kind of rehearsed greeting! That was outrageous to me!