Stella McCartney (born September 13, 1971) is a British fashion designer.

She was born in London, England and is the daughter of former Beatle Paul McCartney and Linda McCartney, a Jewish American famous for her support of vegetarianism and her range of vegetarian food. As a strict vegetarian herself, Stella does not use fur or leather in her designs.

The famous couple wanted their children to lead as normal an existence as possible. Stella attended a local state school in East Sussex, and when she wanted spending money, she had to clean dishes at a local restaurant. She became interested in designing clothes at 12, when she made her first jacket. Three years later, she interned for Christian Lacroix, working on his first fashion design collection, honing her skills on Savile Row for a number of years.

McCartney learned her trade at St Martins College of Art & Design. She was almost instantly successful, with her graduation collection of 1995 being sported at the graduation show by friends and supermodels Naomi Campbell, Yasmin Le Bon and Kate Moss. The show made front-page news, and the entire collection was sold to Tokio, a London boutique. The designs were licensed to Browns, Joseph, Bergdorf Goodman and Neiman-Marcus.

After two collections, in 1997 McCartney was appointed chief designer at Paris fashion house Chloé, following in the footsteps of Karl Lagerfeld. Her designs enjoyed considerable commercial success. In 2001 she resigned from the house in order to enter into an eponymous joint venture with the Gucci Group. The line has three stores, one in New York (September 2002), one in Mayfair (April 2004); and Los Angeles in September 2003, when she both opened the store and expanded her brand into perfume on her birthday.

In 2004, she designed clothes for Madonna's Reinvention tour, Annie Lennox's summer tour, and Gwyneth Paltrow and Jude Law's costumes for the film Sky Captain and the World of Tomorrow. She also launched a joint-venture line with Adidas.

In 2005, she designed a range of clothing and acessories for H&M.

Some in the press have suggested that McCartney's meteoric rise through the fashion industry was partly helped by her having famous parents. In particular, it has been suggested that Vendome, owners of the Chloé house, appointed her as much for the wave of publicity the appointment would generate as her talent. In recent times, however, most commentators have said that she is entirely capable. Indeed, Vogue magazine wrote that "her first collection for the house Chloé, shown in Paris in October 1997, quickly dispelled any doubts about her talent."

After being linked to singer Lenny Kravitz, she married publisher Alasdhair Willis in September 2003, in a private Roman Catholic chapel at Mount Stuart House, the stately home of the Marquess of Bute. The service was attended by Gwyneth Paltrow, Pierce Brosnan and Madonna.

Their first child, son Miller Alisdhair James Willis, was born on 25 February 2005. The couple own a house in London, and a 250acre farm in Pershore, Worcestershire. Stella had another child, a daughter named Bailey Linda, who was born on December 8, 2006. On January 8, 2008, Stella gave birth to her third child, Beckett.