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Celebrating 100 Years!
Sigma Gamma Rho Sorority, Inc celebrates 100 Years of
Sisterhood, Scholarship and Service

Greater Service



Basileus Rocio Llamas

On behalf of the Zealous Zeta Omicron Sigma Alumnae Chapter, I warmly welcome you to our website. I am humbly honored to serve as the current Basileus to this dynamic chapter. Since the chartering of Zeta Omicron Sigma in 1986, we continue to show and prove that we are the epitome of GREATER.  When I transferred to ZOS in 2013, I never would have imagined the amazing work we’ve accomplished thus far and am excited to continue being Zealous About Our Service! ZOS is composed of recent college graduates, post-graduate students, successful entrepreneurs, professionals, and accomplished retirees. We are passionate about our commitment to being impactful to our community, families, supporters, and one another, as we continue to elevate our sisterhood, scholarship and our service.


Thank you for visiting our website.  I encourage you to stay connected and informed by following Zeta Omicron Sigma on all social media platforms.  For additional information regarding the international programs, leadership, membership, and the history of Sigma Gamma Rho Sorority, Incorporated please visit


See you soon!


Rocio Llamas-Zaragoza


Centennial Life Member#1984

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