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Sydney Sweeney and Marilyn Monroe Are Related

By Méabh Keaveney
08/10/2026
Est. Reading: 2 minutes

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Sydney Sweeney

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Sydney Sweeney shares an unexpected family connection with one of Hollywood's legendary icons, Marilyn Monroe.

According to a newly released genealogy study by MyHeritage, the Euphoria star and Monroe are distant relatives, with researchers identifying them as ninth cousins once removed. The connection was traced through a shared ancestor, Ezra Perry, an early settler of Sandwich, Massachusetts.

 

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The family link runs through Sweeney's father, Steven Sweeney, and Monroe's biological father, Charles Stanley Gifford.

Researchers uncovered the relationship after examining the actresses' family trees, a project reportedly inspired by the many comparisons that have been made between the pair over the years.

 

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Sweeney, 29, has frequently been likened to Monroe thanks to her classic Hollywood style and blonde bombshell image.

Earlier this year, Sweeney attended the Santa Barbara International Film Festival wearing a white gown reminiscent of one Monroe famously wore for a LIFE magazine cover shoot in 1952. Months before that, she drew further comparisons after stepping onto the red carpet for The Housemaid premiere in a flowing white dress that echoed Monroe's iconic look from The Seven Year Itch.

 

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Sydney Sweeney rose to prominence through her role as Cassie Howard in HBO's hit drama Euphoria. Since then, she has become one of Hollywood's most in-demand young stars, appearing in projects including The White Lotus, Anyone But You, and The Housemaid.

Away from acting, Sweeney has also remained a regular of online discussions. Most recently, she found herself at the centre of debate following an Novig campaign. The advert features the actress appearing to take part in different sports while in various states of undress. The campaign has been criticised for sexualising women’s sport, with a number of high-profile athletes speaking out against it.

 

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Despite all the controversy, Sweeney continues to be one of the industry's most closely watched celebrities.

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Written by Méabh Keaveney

Méabh is an intern with Classic Hits Radio from the University of Galway. She is excited to spend the next three months gaining hands-on experience in radio as part of her undergraduate degree.

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