Sorority NPHC members include Alpha Kappa Alpha , Delta Sigma Theta , Sigma Gamma Rho , and Zeta Phi Beta . Other Lation Greek Organizations fraternities include Lambda Upsilon Lambda and Psi Sigma Phi. Sororities include Chi Upsilon Sigma, Omega Phi Chi, Mu Sigma Upsilon, Lambda Theta Alpha, Lambda, Lambda Tau Omega. There are many noteworthy members of Greek organizations, including actors, politicians, athletes, and scientists. Usually it's OK to wear your letters even if you're not initiated.
Most Greek organizations reserve the crest for initiated members.
Members of the Phi Gamma Delta fraternity are never allowed to wear their letters. NPC is the National Panhellenic Conference. This organization is the governing body for most national sororities. To be a member of NPC, a sorority must have been established nationally for at least 13 years. All collegiate chapters must be at senior colleges and universities that offer bachelor degrees.