Mika Miko

I feel uncool for having never heard of Mika Miko until now.

Sounds like: 5 sisters who had a much older half brother who was really into Minor Threat and Operation Ivy in a big way. The much older half brother lived in the basement for a while instead of going to college. The 5 sisters all had a hereditary body odor problem and had no friends so they spent a lot of time with their older brother who also had no friends. By the time the girls reached high school they were already playing in bars where former Minor Threat and Operation Ivy fans went to drink. Before they reached college they played at SXSW and that's where we are now.

It's the Virgin Suicides of the 2000's if they hadn't killed themselves!