I'm surprised some sorority somewhere hasn't listed Jackie Kennedy or Audrey Hepburn as members...
Many of the celebrities commonly listed as famous members didn't even graduate from HS, let alone went through Rush. Delta Burke is Greek, I'm remembering Tri-Delt or Chi-O. Courtney Cox attended school up north to avoid the social pressure to join a sorority, being from Birmingham and all--I read this in an interview years ago.
Another very important reason why National Headquarters gives each chapter a list of information suitable for websites--you don't want false information going around!