The Ultimate Guide to It Girl Sisters: Iconic Sisters Who Defined Fashion, Pop Culture, and Society

By Alexus Mosley

Besides many of history’s most unforgettable It Girls, there is another equally fascinating woman who shared not only her last name but also, often, the spotlight. Whether they conquered Hollywood, transformed the fashion industry, reigned over high society, or became style icons in their own right, these famous sisters prove that influence isn’t always a solo act.

Some rose to fame together, while others carved out entirely different paths. But each set left an undeniable mark on fashion, celebrity culture, and the way we define an It Girl. Here are the sister acts who remind us that sometimes, glamour really does run in the family.

Paris Hilton & Nicky Hilton Rothschild

Photo Credit: Matthew Peyton/Getty Images

Before influencers existed, Paris and Nicky Hilton were defining celebrity style from the front row. While Paris became the quintessential Y2K It Girl with her unapologetic glamour and pop culture dominance, Nicky cultivated a quieter, polished image that eventually led her into fashion design and high society through her marriage into the Rothschild family. Together, they remain one of the most iconic socialite sister duos of the modern era.

Mary-Kate & Ashley Olsen

Few sisters have evolved as successfully as Mary-Kate and Ashley Olsen. After becoming child stars and building a billion-dollar entertainment empire, the twins reinvented themselves as respected luxury fashion designers behind The Row. Their effortless aesthetic and enduring influence continue to shape minimalist fashion around the world.

Beyoncé & Solange Knowles

Beyoncé and Solange Knowles each became world icons while embracing completely different artistic identities. Beyoncé’s global superstardom and glamorous image made her one of the defining It Girls of the 21st century, while Solange carved out her own lane through avant-garde fashion, art, and creative direction. Together, they embody two distinct visions of modern style and influence.

Dakota & Elle Fanning

Dakota and Elle Fanning grew up in front of audiences before blossoming into two of Hollywood’s most stylish actresses. Dakota favors timeless sophistication, while Elle embraces whimsical couture and fashion-forward red carpet moments. Their careers have evolved side by side, making them one of Hollywood’s most elegant sister duos.

Cara & Poppy Delevingne

Photo Credit: Anthony Harvey/Getty Images

British sisters Cara and Poppy Delevingne brought effortless cool to fashion and society. Poppy became a fixture on the international social scene and luxury fashion circuit before Cara exploded into superstardom as one of the defining supermodels of the 2010s. Together, they perfectly blend aristocratic charm with modern edge.

The Kardashian-Jenner Sisters

No family has shaped 21st-century celebrity culture quite like the Kardashian-Jenner sisters. From Kim’s influence on beauty and fashion to Kendall’s runway success, Kylie’s beauty empire, and Kourtney, Khloé, and Kendall’s individual style identities, the sisters transformed reality television into a global fashion phenomenon.

Serena & Venus Williams

Serena and Venus Williams revolutionized tennis while simultaneously becoming fashion pioneers. Their fearless approach to style both on and off the court challenged expectations and expanded conversations about luxury, athleticism, and femininity. Today, they remain just as influential in fashion as they are in sports history.

Jackie Kennedy & Lee Radziwill

Long before social media, Jackie Kennedy and Lee Radziwill represented American elegance at its highest level. Jackie became First Lady and an international style icon, while Lee established herself as a celebrated socialite, tastemaker, and fashion fixture. Their enduring influence continues to define classic sophistication.

Kathy Hilton, Kim Richards & Kyle Richards

From child stardom to Beverly Hills society, Kathy Hilton, Kim Richards, and Kyle Richards have remained woven into Hollywood for decades. Whether through acting, reality television, or high society, the sisters have consistently captured public attention while each cultivating her own unique public persona.

Plum & Lucy Sykes

Photo Credit: Juergan Frank/Getty Images

British-born sisters Plum and Lucy Sykes have long been associated with fashion’s most glamorous circles. Lucy built a celebrated career as a fashion editor and author, while Plum became known as a luxury fashion executive and creative leader. Their careers exemplify the influence sisters can have behind the scenes as well as in front of the camera.

Bella & Gigi Hadid

Bella and Gigi Hadid have dominated the modeling industry while redefining what it means to be a modern supermodel. Whether walking for the world’s biggest fashion houses or setting street style trends, the sisters have become two of the most recognizable faces in contemporary fashion.

The Gabor Sisters

Long before today’s celebrity families, the Gabor sisters, Magda, Zsa Zsa, and Eva, mastered the art of fame. The glamorous Hungarian trio became synonymous with Old Hollywood luxury, wit, and international high society, proving that celebrity itself could become an enduring brand.

Tia & Tamera Mowry

Tia and Tamera Mowry became household names through their beloved sitcom Sister, Sister, but their influence extends far beyond television. As actresses, entrepreneurs, and lifestyle personalities, the twins have remained relatable style icons while evolving alongside their audience through every stage of life.

10 Marilyn Monroe Quotes Every It Girl Should Know

It Runs in the Family: The Ultimate Guide to It Girl Sisters