personalities would fit within the greek system

Alpha Phi -Blake Lively
XO -Lucy Liu
AXO -Aubrey O'Day or Lindsay Lohan 
 Kappa -Sophia Bush
Theta -Sheryl Crow
ZTA -Erin Andrews
KD -Lexi Armstrong
SK -Taylor Swift
GPhi -Kristin Chenoweth
AXiD -Jan Davis
PiPhi -Sasha Gray
DG -Julia Louis-Dreyfus

Sigma Chi -Brad Pitt
Pike -Alec Baldwin
SNU -Pauly D or The Situation
Fiji -Matthew Fox
SAE -Spencer Pratt
Delta Chi -Ashton Kutcher meets Steve Buscemi
Beta -John Mayer
Psi U -Phil Nickelson
Farm House -Kenny Chesney
ATO -Jeremy Piven
AEPi  -Jesse Eisenberg
Phi Delt -Jesse Heiman