Formerly engaged to model and actor Jason Shaw 
Sister of Nicky Hilton, Barron Nicholas Hilton, and Conrad Hughes Hilton.
Announced she would live on a farm for a new fish-out-of-water "reality" show called "The Simple Life" (2003). The show is reportedly a takeoff on the 1960s sitcom "Green Acres" (1965). 
Daughter of Rick Hilton and Kathy Richards
For her 21st birthday, she threw five parties for herself in New York, Las Vegas, London, Hollywood and Tokyo.
Has two younger brothers, Barron Nicholas & Conrad Hughes
Mother is the former actress Kathy Richards.
Niece of Kim Richards and Kyle Richards.
Measurements: 34B-25-35 (Source: Celebrity Sleuth magazine)
Has three Pomeranians named Dolce, Sebastian and Prince, as well as two chihuahuas named 'Tinkerbell the dog' and Bambi.
Briefly attended the Canterbury School, a boarding school in Connecticut, during her junior year. She then transfered to the Dwight School in New York City before dropping out a few months later and getting a GED.
Chosen the worst-dressed celebrity in 2003 by fashion critic Mr. Blackwell (Richard Selzer).
Briefly attended the Buckley School in Sherman Oaks, California.
Popularity skyrocketed after a homemade sex video between her and ex- boyfriend Rick Salomon (Shannen Doherty's estranged husband) scattered all over the internet in October of 2003. The video was made when she was 19.
Great-niece of Conrad Hilton Jr. and Francesca Hilton
Has been romantically linked to actors Leonardo DiCaprio, Edward Furlong, Jamie Kennedy, Simon Rex, Australian Idol star Rob Mills, Sum 41 lead singer Deryck Whibley, producer Robert Evans, boxer Oscar De La Hoya, and nightclub owner Ingrid Casares.
Announced at the end of 2003 that she is recording an album. She enlisted the help of J.C. Chasez and his producer Rob Boldt to help in the creation of a dance-pop album.
Dated Backstreet Boys singer Nick Carter. [December 2003-July 2004]
The Hilton name is of Norwegian origin. Her great-great-grandfather August Halvorsen Hilton was born on the family farm Hilton, at Kløfta, just outside Oslo, Norway before emigrating to the US with his family at age 10.
In October 2004, she officially had her popular quote, "That's hot", trademarked.
Great-granddaughter of Conrad Hilton and Mary Adelaide Barron.
Plans to open "Club Paris" in Orlando, Florida in 2005.
She wears a size 11 shoe. Many top designers don't make their shoes in an 11, so they have them custom made just for her.
Was a victim of a serious hacking incident, where her T-Mobile address book, notes, and private photographs taken with a camera phone were released on the Internet. The address book revealed hotel and airline preferences, and exposed private phone numbers and e-mail addresses for numerous celebrities and other Hollywood elite.
Favorite sport is golf
Madame Tussaud's on 42nd Street unveiled a wax dummy of her to coincide with the release of the movie House of Wax (2005) in which she has a role. [1 May 2005]
Met boyfriend Paris Latsis at a nightclub when he was only 16, while she was only 14
Is working on a clothing line that she plans to name "That's Hot"
Studied the Sanford Meisner acting technique for three and a half years.
Became engaged to boyfriend Paris Latsis [May 25, 2005].
Along with Tara Reid, her sister Nicky Hilton, Bijou Phillips, Kimberly Stewart, Lindsay Lohan & Nicole Richie is one of Hollywood's most famous party girls
Had a falling out with co-star and former best friend Nicole Richie. 
Was a cheerleader in high school.
Wrote to Prince Charles to ask if she and her fiancé, Paris Latsis, could be married in Westminster Abbey, St. Paul's Cathedral, or Windsor Castle.
Established her own record label, Heiress Records, in 2004.
Great-grand-niece of Zsa Zsa Gabor.
Her great-aunt is actress Zsa Zsa Gabor.
Is a huge fan of the band Blondie and singer Deborah Harry.
Taught herself to play the guitar for the release of her upcoming album.
Her favorite color is pink
Ranked #59 in FHM 100 Sexiest Women 2004
Ranked #23 in FHM 100 Sexiest Women 2005
Was involved in a minor car crash along with some friends and her current boyfriend Stavros Niarchos. No one got hurt. [November 2005]
Ended engagement to Greek shipping heir, Paris Latsis, in September 2005
Named #20 on the Maxim magazine Hot 100 of 2005 list.
Released her second perfume, Just Me, as a follow up to her first perfume, Paris Hilton.
Hilton's ex-fiancé bought her a 24-carat yellow diamond ring while they were engaged.