Our Leaders



Leading with Bold, Clear Vision

in service to Our Members.

The success that Phi Sigma Sigma enjoys, today, is largely due to the insight, discretion and passion our Supreme Council has devoted to the Fraternity for more than a century.


These dedicated women are the heart of Phi Sigma Sigma and are responsible for our Fraternity. They work in close partnership with Fraternity volunteers, Headquarters staff, the Phi Sigma Sigma Foundation and the National Housing Corporation.  


Supreme Council is committed to serving Phi Sigma Sigma and opening the lines of communication among its members.


To get in touch with a Supreme Council member, please contact them through Headquarters at phisighq@phisigmasigma.org  at 410-799-1224. 



Katie Vlietstra Wonnenberg is proud to serve her second term as Phi Sigma Sigma's grand archon. Over the past biennium, Katie has led the charge to infuse throughout the organization the sentiment of "One Phi Sigma Sigma," recognizing the strength of Phi Sigma Sigma comes from our collective drive to ensure we are providing a premiere membership experience for all of our members.


She has previously served the Fraternity as grand vice archon, director, chapter key advisor, community archon, chairman of the volunteer training committee and leadership development consultant. Within the interfraternal world, Katie serves on the council of delegates for the National Panhellenic Conference. As a passionate advocate and supporter of women candidates and advancing public policy that supports women and children, she serves on the board of directors to the Women Under Forty Political Action Committee, Fraternity/Sorority Political Action Committee and the Fraternity/Sorority Action Fund, which funded the lawsuit against Harvard University in fighting the University’s discrimination policy against women’s organizations. Katie lives in Washington, D.C. with her husband David.


Professionally, Katie has over 15 years of government relations and public affairs experience. Currently, she is the vice president for government relations and public affairs for the National Association for Self-Employed and co-founder and principal of boutique, DC based consulting firm, Public Private Strategies.

Katie Vlietstra Wonnenberg,

Epsilon Delta Chapter at Chapman University



Tess is entering her second term as grand vice archon having previously served one term as a director on Supreme Council. Tess directly supports the strategic planning and volunteer placements efforts within Phi Sigma Sigma. She brings 14 years of volunteer experience to the board of directors, previously serving on collegiate chapter advisory boards, alumnae chapter executive boards, as the volunteer structure task force co-chairman and International Standards Board chairman.


Tess is the director of charter schools for the Tennessee State Board of Education, where she oversees the charter school application and authorization process for the board and its three authorized charter schools. Tess annually serves as a Tennessee Promise mentor to five high school seniors and supports them through the college admissions process.

Tess Stovall

Kappa Chapter at The George Washington University



This is Wendy's third term as grand vice archon - finance her sixth term on Supreme Council, having previously served six years as a director. Wendy counts Phi Sigma Sigma Foundation director, leadership development consultant, chapter key advisor and ACHIEVE facilitator among her many roles in the organization throughout the years.

Wendy is currently the risk management lead - west region for AECOM, a global Fortune 500 company, following a 16-year career as a knowledgeable litigator and partner of a national law firm with experience in business transactions, contracts, construction, labor and employment and general liability.

Additionally, Wendy serves as a trustee for the Board of Trustees for the University of La Verne, a planning commissioner for the City of La Verne and a member of the executive team for the March of Dimes Signature Chefs event. 

Wendy Lau

Theta Upsilon Chapter at the University of La Verne



Meggie is serving her second term as director. Prior to her election on Supreme Council, Meggie served the Fraternity for more than 10 years, specifically as International Standards Board chairman, counsel, and representative as well as regional programming coordinator. 

Meggie is the general counsel for HopeHealth, Inc., a nonprofit community health center with 11 sites across South Carolina, focusing on governance, compliance, risk management and strategy. Additionally, she lectures at two universities as an adjunct professor in business law. Meggie participates in numerous other community and philanthropic organizations, including service on the boards for the Junior League of Florence, Habitat for Humanity and The School Foundation. She remains active in theater and dance across the Carolinas in an effort to remain connected to her work in the arts prior to starting her legal career.

Meggie Baker

Kappa Chapter at The George Washington University



This is Jenny’s first term as director. With a Phi Sigma Sigma volunteer career spanning over two decades, Jenny has served the organization in a variety of roles. Her prior service includes the housing committee, investment sub-committee, Chapter Excellence specialist, Convention committee and nominating committee. Her most recent roles include alumnae leadership task force chairman for the 2017-2020 strategic plan and member of the awards committee.

Jenny is the complex administrative manager/operations manager for the South Louisiana Complex at Raymond James Financial. Her role focuses on management, operations, compliance oversight and human resources across the south Louisiana region. In addition to her service to Phi Sigma Sigma, she supports local charitable organizations within her community such as the Baton Rouge Food Bank and Cancer Services of Baton Rouge.

Jenny Bernard

Delta Psi Chapter at the University of West Florida



Breny has been volunteering since graduation and has served in a multitude of capacities including chapter key advisor, awards committee and Centennial committee. This is Breny’s third term on Supreme Council.


Breny is the associate vice president of student health and wellness for Florida International University. In this role, Breny provides leadership over key areas of Dean of Students, counseling & psychological services, healthy living, victim empowerment program and student conduct and conflict resolution. She works across academic and student affairs, and collaboratively with units across campus, to support the university’s strategic goals related to building and supporting a culture of healthy living, promoting mental health initiatives across the university and representing the university at the state level on such matters.

Breny DaParre Garcia, Ed.D.

Delta Kappa Chapter at Florida International University



This is Kim's first term as director. Since graduation, Kim has served Phi Sigma Sigma in various roles including chapter key advisor, member of the 2017-2020 strategic plan alumnae experience task force, Chapter Excellence specialist, Sonoma State University extension team member and CKA coach. Other roles included serving as archon of the Capital City Alumnae Chapter and the Foundation's scholarships and grants committee. 


Professionally, Kim is a lobbyist with HR Dowden & Associates, a women-run government relations and consulting firm, which focuses on a variety of issues such as education, technology and underprivileged youth services. She also mentors young adults starting their career in politics through the Sac Semester Program.

Kim Lewis

Theta Chi Chapter at California State University - Sacramento



We believe that providing private, residential housing supports our organizational philosophy of providing a premier membership experience. Managed by a dedicated board of Phi Sigma Sigma volunteers, the NHC manages all housing efforts and works with supervising directors, local volunteers, contractors and suppliers to provide quality housing experiences for Phi Sigma Sigma sisters.





The Foundation’s mission is to cultivate relationships, secure and provide financial resources for Phi Sigma Sigma sisters to achieve excellence, impact their communities, and change the world. Through charitable donations, the Foundation funds scholarships, educational and leadership development programming and promotes our signature philanthropic cause – school and college readiness. 




Phi Sigma Sigma is supported by our professional Headquarters staff who understand the unique business of sorority and are able to provide comprehensive services to our collegians and alumnae. From the monitoring of chapter programming to the maintenance of our financial health, the role of staff is essential to the daily operations of our collegiate chapters and our general membership.