Question: Sid Avery was an American photographer and director who was best known for capturing the private moments of legendary Hollywood celebrities like which British-American actress, businesswoman, and humanitarian?

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Steve Schapiro: Steve Schapiro (born 1934, in New York) is an American photographer.  He is known for his photos of key moments of the Civil Rights Movement such as the March on Washington for Jobs and Freedom or the Selma to Montgomery marches.  He is also known for his portraits of celebrities and movie stills, most importantly from "The Godfather" and "Taxi Driver."

Brett-Livingstone Strong: Brett-Livingstone Strong (born 31 October 1953) is an Australian-born artist, best known for his sculptures of Hollywood celebrities.

Leigh Wiener: Leigh Austen Wiener (August 25, 1929 - May 11, 1993) was an award-winning American photographer and photojournalist.  In a career that spanned five decades, he covered hundreds of people and events.  His images captured the public and private moments of entertainers, musicians, artists, authors, poets, scientists, sports figures, politicians, industrialists, and heads of state, including every U.S. president from Harry Truman to Ronald Reagan and illustrated every sector of industry including farming, steel mills, auto manufacturing, aerospace, medicine, research, early computing and semi-conductor manufacturing.

Jade Mills: Jade Mills is an American real estate agent, president of Jade Mills Estates, and the International Ambassador for Coldwell Banker Previews.  In 2012 Mills became the #1 real estate agent worldwide for Coldwell Banker, with over $360 million in sales.  Mills' clients include Hollywood celebrities like Britney Spears, Jennifer Aniston, Charlie Sheen, and Sela Ward.

Tony Duran (photographer): Tony Duran is an American photographer.  He is known for his photographs of celebrities and his work with male models.  Duran is one of the most widely published photographers of celebrities.  He has photographed a "virtual who's who of the Hollywood and fashion set."  Widely revered in the fashion industry, Duran has been called both "genius" and "brilliant," and his work has been said to express "unrivaled artistic vision"

Elizabeth Taylor: Dame Elizabeth Rosemond Taylor, DBE (February 27, 1932 – March 23, 2011) was a British-American actress, businesswoman, and humanitarian.  She began her career as a child actress in the early 1940s, and was one of the most popular stars of classical Hollywood cinema in the 1950s.  She continued her career successfully into the 1960s, and remained a well known public figure for the rest of her life.  In 1999, the American Film Institute named her the seventh-greatest female screen legend.

Matt Hoyle: Matt Hoyle is an American photographer based in New York City.  He is most known for publishing "Comic Genius: Portraits of Funny People", a book which features photos of famous celebrities like Steve Martin, Tina Fey, Mel Brooks and Carol Burnett.  His work has been exhibited at the National Portrait Gallery, London.

Sid Avery: Sid Avery (October 12, 1918 – July 1, 2002) was an American photographer and director who was best known for capturing the private moments of legendary Hollywood celebrities like Elizabeth Taylor, Rock Hudson, James Dean, Marlon Brando, Humphrey Bogart and Audrey Hepburn as showcased in his book, "Hollywood at Home."

Tom Kelley (photographer): Tom Kelley Sr. (December 12, 1914 – January 8, 1984) was an American photographer who photographed Hollywood celebrities in the 1940s and 1950s.  He is best known for his iconic 1949 nude photographs of Marilyn Monroe, which were distributed widely as calendar art—one of which was featured in the inaugural issue of "Playboy" magazine in 1953.

Frank W. Ockenfels III: Frank W. Ockenfels III (referred to professionally as Frank Ockenfels 3) is an American photographer, artist, and director who is best known for his portraits of prominent celebrities like David Bowie, Angelina Jolie, Kurt Cobain and numerous others.  He has also done promotional photography for films and television shows like "Breaking Bad", "House of Cards", "Harry Potter" and "Pirates of the Caribbean" among many others.

Supporting paragraphs: Sid Avery Elizabeth Taylor
Answer: Elizabeth Rosemond Taylor