Kyle Egan Richards was born in Hollywood, California, to Kathleen Mary (Dugan) and Kenneth Edwin Richards, a business executive. Ken died in 1998. Kathleen was diagnosed with breast cancer the same year, and passed away in March of 2002. Kyle, like her sister Kim, began acting at a very young age. She made many appearances on Little House on the Prairie (1974) as Alicia Sanderson Edwards.
Kyle has four daughters: Farrah (from her previous relationship to Guraish Aldjufrie), and Alexia, Sophia and Portia from her marriage to real estate agent Mauricio Umansky.