In 2005, Nicky Hilton, along with Kimberly Stewart, was the face of Australian underwear line, Antz Pantz. Stewart remains contracted, however Hilton has since been replaced by Australian up-and-coming model Meagan Maitland.

Nicky Hilton dated Lost star Ian Somerhalder in 2003 and as of January 2006 was dating Entourage star Kevin Connolly.

Nicky Hilton's primary activities involve modelling, personal appearances, and designing handbags, and these activities earn Nicky nearly $1,000,000 USD per year.

Nicky and sister Paris Hilton are known for their jet-set lifestyles, though Nicky has kept a lower profile.

Currently, Nicky Hilton's parents own a $10,000,000 USD mansion in Bel Air, California, a $6,300,000 USD estate in The Hamptons, as well as a $3,000,000 USD home in the Hills of Hollywood in which Nicky and her sister, Paris, live to give them privacy and easy access to the L.A. clubs they love to frequent.

The current net worth of Barron Hilton is estimated at just over 1,000,000,000 USD, of which Nicky is expected to inherit around $50,000,000 USD.

Nicky Hilton shares her nickname with her grandfather's brother Conrad "Nicky" Hilton, who died 14 years before she was born.

Nicky Hilton's paternal grandparents are Barron Hilton and Marilyn Hawley.

Nicky Hilton was the second of four children born to Richard Hilton and Kathy Richards. Her sister and brothers are Paris Hilton, Barron Hilton and Conrad Hilton.

Nicky Hilton is an heiress to a part of the Hilton Hotel chain, as well as to about 5%-15% of her father's real estate fortune and investments.