Robbie Diamond was born and raised in Los Angeles, attending Dorsey High School and Cal State Northridge. She has worked in many fields including founding the Kindergarten Extended Day Program at Warner Avenue School, which was the predecessor to the STAR Education program. Robbie was a personal assistant to real estate developer and art collector Arthur Gilbert for twelve years, and then, upon his death, she became the administrator of The Rosalinde and Arthur Gilbert Foundation. She has volunteered with many groups over the years, including The Beauty Bus, P.S. Arts and the Entertainment Industry Foundation.
Robbie loves to bake, read, travel and spend time with her family, including her two grandchildren, Oliver and Quinn.