From 1975 to 1993 worked as a prize presenter on The Price Is Right.
In 1965, while living in Falls Church, Virginia, she won the Miss District of Columbia USA title and competed as Diana Batts in the Miss USA 1965 pageant, where she placed fourth runner-up. Parkinson won the 1965 Miss USA World contest. She went on to represent the United States in the international Miss World 1965 contest, and was first runner-up to Lesley Langley of the United Kingdom.
In 1975, she was a guest star on The Mary Tyler Moore Show ("Ted's Moment of Glory").
In 1978, she appeared in the pilot of the TV series Vega$.
From 1975 to 1993, Parkinson was a model on the US television game show The Price Is Right. Her 18-year tenure on the show was among the longest of any of the models, second only to Janice Pennington, who was with the show for more than 28 years.
Departure from The Price Is Right
Parkinson left the show in 1993, supposedly to "pursue other interests", as host Bob Barker announced during her final appearance.
In 1994, Parkinson filed a lawsuit in Los Angeles Superior Court (case no. BC106366) against Barker for sexual harassment, claiming a three-year sexual relationship was extorted by threats of firing from The Price Is Right, which resulted in a miscarriage. Barker denied the sexual harassment allegations. The suit was withdrawn in April 1995, Parkinson claiming it was too costly and had taken a toll on her health.
Parkinson was the cover girl of Playboy in December 1991 and again in May 1993. In 1993, Parkinson was featured exclusively in a Playboy "Newsstand Edition" photo magazine entitled Playboy Presents, Dian Parkinson. Also in 1993, the video Playboy Celebrity Centerfold: Dian Parkinson was released.
She listed a residence in Westlake Village, California in November 2019.
- "Miss D.C. Captures A Miss USA. Title With Tresses Intact". 1965-08-23. p. B9. Retrieved 2007-02-25.
- Miss World USA Titleholders, jimmyspageantpage.com; accessed April 2, 2017.
- Miss World 2008, missworld.tv; accessed April 2, 2017.
- Bob Hope Chrysler Classic - The Tradition of the Classic Girls, bhcc.com; accessed April 2, 2017.
- "Vega$" High Roller (TV Episode 1978) - IMDb, retrieved 2019-04-04
- Barker's Beauties - Golden-Road.net FAQ, golden-road.net; accessed September 16, 2017.
- Bob Barker to face courtroom battle after model's suit ruled valid Archived 2009-03-05 at the Wayback Machine, v; accessed April 2, 2017.
- "Super Model - Dian Parkinson - Playboy Plus". www.playboyplus.com. Retrieved 2019-04-04.
- "Classics - Dian's Back! - Playboy Plus". www.playboyplus.com. Retrieved 2019-04-04.
- "Playboy Celebrity Centerfold: Dian Parkinson (1993)". IMDb. Retrieved October 20, 2019.
- Coolestmovies (2009-10-11), 1990's INFOMERCIAL HELL #12: Dian Parkinson shills for the exercise gadget EZ Krunch, retrieved 2019-04-04
| Miss District of Columbia USA