You give Northerners a bad name makes me think of Bon Jovi which makes me happy.
Honeychile, I think that you can wear the same colors as her sorority or her bridal party. One thing though, my sister inadvertently wore a very similar dress as a bridal party a few years ago. Everyone kept confusing her as a bridesmaid including the photographer. It was pretty funny. They had great taste in dresses.