Paris Whitney Hilton (born February 17, 1981) is an American businesswoman, socialite, television and media personality, model, actress, singer, and DJ.
 She is the great-granddaughter of Conrad Hilton, the founder of Hilton Hotels.
 Born in New York City and raised there and in Beverly Hills, California, Hilton began her modeling career as a teenager when she signed with New York-based modelling development agency Trump Model Management.
 Her lifestyle and rumored short-lived relationships made her a feature of entertainment news and tabloid magazines, and Hilton was proclaimed "New York's leading It girl" in 2001.
 In 2003, a sex tape with Hilton and her then-boyfriend Rick Salomon, later released as "1 Night in Paris", was leaked to the public.
 Released only three weeks before the premiere of the reality television series "The Simple Life", in which she starred alongside her long-time friend Nicole Richie, the sex tape became a media sensation.
William Barron Hilton (born October 23, 1927) is an American business magnate, socialite, and hotel heir.
 The son and successor of hotelier Conrad Hilton, he is the retired chairman, president and chief executive officer of Hilton Hotels Corporation and chairman emeritus of the Conrad N. Hilton Foundation.
 Hilton was also a founding partner of the American Football League and the original owner of the Los Angeles Chargers.
Perez Hilton (born Mario Armando Lavandeira Jr.; March 23, 1978), is an American blogger, columnist and television personality.
 His blog, PerezHilton.com (formerly PageSixSixSix.com), is known for posts covering gossip items about celebrities.
 He is also known for posting tabloid photographs over which he has added his own captions or "doodles".
 His blog has garnered controversy for its attitude, its former outing of alleged closeted celebrities, and its role in the increasing coverage of celebrities in all forms of media.
The Hilton family is an American family.
 The family members hold varying degrees of wealth and status as socialites in the United States.
 They are widely known for the Hilton Hotel and Resorts Group which was established by Conrad Hilton in 1919 when he bought his first hotel.
Constance Francesca Gabor Hilton (March 10, 1947 – January 5, 2015) was an American actress, photographer and comedian.
 She was the only daughter of Hilton Hotel founder Conrad Hilton with his second wife, actress and socialite Zsa Zsa Gabor.
Conrad Nicholson "Nicky" Hilton Jr. (July 6, 1926 – February 5, 1969) was an American socialite, hotel heir, and businessman.
 He was one of the sons of Conrad Hilton (founder of Hilton Hotels).
Wyndham Grand Pittsburgh Downtown (formerly the Hilton Pittsburgh) is a hotel in Downtown Pittsburgh, with a prominent position in the Golden Triangle area adjacent to Point State Park, the Fort Pitt Museum and the Cultural District.
 Hilton announced plans for the skyscraper hotel on June 11, 1956 and ground was broken for it on September 20, 1957 with Conrad Hilton himself in attendance.
 It was opened for business with a special gala on December 3, 1959 again attended by Mr. Hilton as well as Governor Lawrence.
 The hotel is the city's largest with 712 rooms and over 40,000 square feet of conference facilities.
Holy Moly, often known as "HM", was an entertainment website based in the UK and had similarities to Popbitch, Anorak and B3ta.
 It published (often mocking) gossip items related to celebrities, notably Amy Winehouse, Sienna Miller, Britney Spears, Tom Cruise and Paris Hilton.
 The website's scoops were often copied in the gossip pages of British tabloids such as "The Sun" the "Daily Mirror" and the "Daily Star" .
 Sometimes Holy Moly would announce news before tabloids, for example, Madonna's divorce from Guy Ritchie four months before "The Sun"'s front page 'exclusive'.
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Justin Hawley McAuliffe (born October 7, 1987) is an American entrepreneur and philanthropist.
 He is the grandson of Barron Hilton and the great-grandson of Conrad Hilton, founder of Hilton Hotels.
 He is the founder and CEO of Acceleron Digital, a digital marketing agency.
Conrad Hotels & Resorts is an international brand of luxury hotels and resorts owned and operated by Hilton Worldwide.
 Conrad was considered the luxury flagship brand in the Hilton Family of Brands, named after company founder Conrad Hilton, until being supplanted by The Waldorf-Astoria Collection in 2006.

Question: Holy Moly was an entertainment website that published gossip items relating to celebrities, including the great-granddaughter of Conrad Hilton, who is the the founder of what hotel chain?
Answer: Hilton Hotels