Katie Rees was born as Katherine Rees on August 11, 1984 in St Petersburg, Florida. She is a former American beauty queen who has held the Miss Nevada USA title. Rees was to compete in the Miss USA 2007 pageant but was dethroned in December of 2006 following the release of pictures of her semi-naked, kissing, sucking the nipples of other women, and simulating cunnilingus and fellatio at a Florida nightclub three years prior.

Katie won the Miss Nevada USA 2007 title in a state pageant held in Las Vegas on 8 October 2006; it was her first attempt at this title. Katie was crowned by outgoing titleholder Lauren Scyphers. Her "sister" titleholder, Miss Nevada Teen USA 2007, was Danielle Hashimoto.

On 20 December 2006, allegations of Rees exhibiting raunchy behaviour in a Florida nightclub were made, and several photographs of Rees exposing her left nipple, kissing and licking other women, and simulating sexual acts were released to the media. This followed a scandal involving Miss USA 2006 Tara Conner, in which news reports claimed Conner had been drinking underage; Conner was allowed to retain her title.

On 21 December 2006, Rees was stripped of her crown by the Miss Universe Organization with the approval of pageant co-owner Donald Trump. She was succeeded by pageant first runner-up Helen Salas, who represented Nevada in the Miss USA 2007 pageant in March.

In 2007, Rees appeared on the television show Dr. Phil on an episode entitled "Caught in the Act".