Sneider was nominated for a Shorty Award for her podcasting experience in 2014, a result of her being very active in the entertainment and charity scenes in Los Angeles as well as maintaining an active web presence.
Estella Sneider was born on September 3, 1950 in Mexico City, Mexico, as the youngest child and only daughter of Simon Sneider and Esther Bessudo Perez. Her four older brothers, three of which are still living, are Ruben Sneider Bessudo (b. October 31, 1936 - d. January 3, 2009), Luis Sneider Bessudo, Jorge Sneider Bessudo, and Guillermo Sneider Bessudo. She attended Escuela Secundaria y Preparatoria de la Ciudad de Mexico for junior high school, moving to Colegio Hebreo Tarbut for high school. The high school belonged to the Tarbut movement. After getting pregnant, she finished out her high school career at Instituto Superior Abierto.
In 1968, at the age of 18, Sneider married Eduardo Umansky. Together they had two children: Mauricio Simon Umansky and Sharon Umansky. In 1976, the family moved to the United States so that Sneider could pursue higher education. She earned a Bachelor's in Psychology in 1980 from the University of Southern California, followed by a Master's (1984) and then PsyD (1986) in Psychology from the California Graduate Institute. Following her PsyD, Sneider attended the University of California Los Angeles for a year of training in Sexology and Sexual Therapy.
In 1996, her son Mauricio married American actress Kyle Richards as her second husband. Together, the couple have three daughters, namely Alexia Simone, Sophia, and Portia Umansky. Mauricio works as a high end real estate agent, focusing on properties around Beverly Hills and Bel Air, and has a net worth of approximately $30 million. Mauricio's marriage to Kyle was the vehicle for Sneider appearing on TRHOBH. Of her relationship with Kyle, Sneider stated, "She is a wonderful wife to my son Mauricio Umansky for 17-plus years, a fabulous mother to my granddaughters and the best daughter-in-law any mother could have."
Daughter Sharon married Kendall Tyler Benton, and together they live in an upscale part of Los Angeles with their three children, namely Noah, Adam, and Lyla Benton.
In 2014, a number of celebrities nominated Sneider for a Shorty Award, including Camille Grammer, Ann Wilson, Kyle Richards, Cristian Solis (wife of Marco Antonio Solís), and others, resulting in about 50 nominations overall.
When WIZO named Sneider a Gala Honoree in 2013, she was thanked for her work in the organization by Californian politicians Brad Sherman, Adam B. Schiff, Zev Yaroslavsky, Bernard C. Parks, Bob Blumenfield, Curren D. Price, Jr., Eric Garcetti, Nury Martinez, and the Beverly Hills city council.
Sneider is regularly an attendee at society and charity events, including Nick Palance's galas.
Sneider has been open about having had plastic surgery. On season 2, episode 9 of RHOBH, Sneider underwent a facelift. During healing, Sneider did not appear on the show until episode 14, at which time her daughter-in-law Kyle stated "Only in Beverly Hills can your mother-in-law look younger than you".
In 2011, Sneider sent her condolences to fellow TRHOBH alum Taylor Armstrong after her former husband committed suicide. E! News interviewed Sneider, where she talked about dealing with suicidal patients. "When I see general patients who have been suicidal, I ask what their plans are, why did they choose that. Explain the plans such as who will find them and what do they think people will think? It's amazing when people start exploring, they get to the message and the real pain that they're feeling. They let it go. Unfortunately, I wish more people would reach out and more professionals are there."
Along with psychology, sexology, charity work, and writing, Sneider is also a property photographer and runs Luxury Style Photography. The business is built around photographing upscale properties and homes which are being put on the market.