Actress Jamie Lee Curtis announced the passing of her older sister Kelly Curtis, who died at home at age 69 on Saturday, according to a heartfelt Instagram post. Kelly, the daughter of screen icons Tony Curtis and Janet Leigh, was a former actress and longtime production assistant known for her sharp opinions, generous spirit, and famous Christmas cookies. The cause of death has not been disclosed by the family.

A Hollywood dynasty's latest loss: Kelly Curtis, daughter of Tony Curtis and Janet Leigh, dies at 69

Kelly Curtis was born into one of Hollywood's most famous families, arriving in Santa Monica in 1956, two years before her parents' divorce. As the elder daughter of Tony Curtis and Janet Leigh, she grew up in the shadow of the silver screen but carved her own path. According to the Daily Mail, she studied at the Lee Strasberg Theatre Institute and made her film debut at age two in her parents' movie The Vikings. Her later acting credits included a role in Dario Argento's 1991 horror film The Devil's Daughter and a cameo in Trading Places (1983). The Curtis family legacy is a thread through Hollywood history—from Tony Curtis's swashbuckling roles to Janet Leigh's iconic shower scene in Psycho. Kelly and Jamie Lee grew up in the public eye but often sought private lives. Kelly's choice to work as a production assistant rather than maintain an acting career reflects a practical approach to the industry, a contrast to her father's larger-than-life persona.

From 'Auntie Cookie' to confidante: Jamie Lee Curtis's tribute highlights a lifelong bond

In her Instagram announcement, Jamie Lee Curtis described her sister as "a woman of loving generosity, fierce opinions, boundless curiosity" and noted her trademark powdered almond crescent cookies at Christmas, which earned Kelly the nickname "Auntie Cookie." Jamie Lee also revealed that Kelly was a devoted player of Pokémon Go and a proud American patriot who embraced her Danish roots and Hungarian Jewish ancestry. The post concluded with a Hungarian blessing, "Isten Veled," a phrase Kelly often used.

The sisters' relationship extended beyond the familial. In the 2000s, Kelly worked as a production assistant on several of Jamie Lee's films, including Freaky Friday, Christmas with the Kranks, and You Again, according to the Daily Mail . This behind-the-scenes role demonstrated a supportive partnership that went well beyond the screen, showcasing a collaboration that Jamie Lee has often spoken of fondly.

The undisclosed cause of death: what remains private in a very public family

Jamie Lee Curtis chose not to reveal the cause of Kelly's death,and the Daily Mail reports that representatives for the family have not responded to requests for comment. this decision to keep the cause private respects the family's personal boundaries while the public process of mourning unfolds. It also leaves a natural curiosity: what led to the passing of a 69-year-old woman who, by her sister's account, was full of life and curiosity? The family's silence on the matter—and the lack of comment from representatives—leaves the public with only Jamie Lee's tribute to remember her by.

A legacy of curiosity and resilience: Tony Curtis's memories of his elder daughter

Tony Curtis , in his memoirs, recalled his daughter's inquisitive nature, noting how she once examined a television to understand its inner workings. The source also reports that Tony Curtis reflected on the turbulent marriage with Janet Leigh and the impact on their daughters, yet emphasized Kelly's resilience and practicality throughout her life. These recollections paint a picture of a woman who,despite the pressures of a famous family, remained grounded and hands-on. Kelly's life, though less visible than her father's or sister's, was no less a part of Hollywood's fabric, marked by a quiet dedication to her craft and family.