Question: Who's sister began receiving media attention with her appearance as the maid of honour at her sister's wedding to Prince William, who's mother s a former flight attendant turned businesswoman ?

Context paragraphs:
Carole Middleton: Carole Elizabeth Middleton ("née" Goldsmith; born 31 January 1955) is a former flight attendant turned businesswoman, and mother of Catherine, Duchess of Cambridge, and her siblings, Pippa Middleton and James Middleton.

Suzen Johnson: Suzen Johnson (born February 1951) is a former flight attendant, businesswoman and model.  She had an affair with sports reporter Frank Gifford in April and May 1997.  The two were photographed together, bringing embarrassment to Gifford and his wife, Kathie Lee.

Pippa Middleton: Philippa Charlotte Middleton ( ; born 6 September 1983) is an English socialite, author, columnist, and the younger sister of Catherine, Duchess of Cambridge.  Middleton began receiving media attention with her appearance as the maid of honour at her sister's wedding to Prince William.  After marrying James Matthews in 2017, she will be styled Lady Glen Affric should he inherit his father's title.

Ellen Simonetti: Ellen Simonetti (born December 15, 1974, North Carolina) is a former flight attendant who was fired after documenting her life and work experiences on a blog in the early 2000s.

The Aviary: The Aviary is a 2005 independent film about the ups and downs in the personal life of a flight attendant, coping with a transfer to a new city, finding a new love, and everything in between.  It was written and produced by Abe Levy and Silver Tree, who was a flight attendant herself for many years.

Larry Gaye: Renegade Male Flight Attendant: Larry Gaye: Renegade Male Flight Attendant is a 2015 American comedy film.  It stars Mark Feuerstein, Danny Pudi, Jayma Mays, Patrick Warburton and Rebecca Romijn, and was directed by Sam Friedlander and written by Mike Sikowitz.  The film concerns a flight attendant who discovers that the airline company he is working for is trying to slash costs by having human flight attendants replaced with actual robots.  It was Friedlander's feature film debut as director.

Roz Hanby: Roz Hanby (born 1951 in London), a former flight attendant, is notable for being the face of British Airways in their "Fly the Flag" advertising campaign over a 7-year period in the 1980s.  She became a minor celebrity as a result.

Ron Akana: Ron Akana (born 1928 in Honolulu) is a former US-American Flight attendant, who spent 63 years working as cabin crew for United Airlines and who logged an estimated 200 million airmiles.  He was the world's longest serving flight attendant and was admitted to The Guinness Book of Records.

Léopoldine Doualla-Bell Smith: Léopoldine Doualla-Bell Smith is the world's first black flight attendant.  She was born in Cameroon, and was a princess of the royal Douala family of Cameroon.  She took her first flight as a flight attendant (with Union Aéromaritime de Transport) in 1957.  In 1960 she was invited to move to Air Afrique; she was then the only qualified African person in French aviation, and thus became the first employee hired by Air Afrique.  She shortly became Air Afrique's first cabin chief.  She flew for twelve years.  She was honored at the 40th anniversary celebration of the Black Flight Attendants of America at Los Angeles International Airport’s Flight Path Museum.

JetBlue flight attendant incident: The JetBlue flight attendant incident was an altercation that occurred after JetBlue Airlines Flight 1052, a flight from Pittsburgh to New York City on August 9, 2010, had landed.  The incident garnered significant media attention when, upon landing, Steven Slater, a flight attendant having been in the industry for 28 years, announced over the plane's public address system that he had been abused by a passenger and that he quit his job.  He then grabbed two beers and exited the plane by deploying the evacuation slide and sliding down it.  Slater claimed to have been injured by a passenger when he instructed her to sit down.  Slater's account of the event was not corroborated by others.

Supporting paragraphs: Carole Middleton Pippa Middleton
Answer: Catherine, Duchess of Cambridge