Lambda Theta Alumnae Chapter was established on December 14, 2004, by five Lambda Theta Alpha alumnae living in the state of Washington,  These sisters included:

• Hindira  "Dee Dee"  Navarro (Gamma Omicron)
• Blanca Torres (Gamma Beta)
• Nancy Vargas (Gamma Omicron)
• Debbie Vega (Gamma Omicron)
• Belinda Zinzún (Gamma Omicron)

Feeling the need to continue the mission of Lambda Theta Alpha after graduating college, these sisters formed a union to support the undergraduate sisters, as well, as their community. Sisters in Washington are  nurses, lawyers, graphic designers, accountants, engineers, case workers, teachers, and  much more.