[4] She is best known for her several appearances for Stampede Wrestling and WWE often with her brothers Bret and Owen Hart as well as her husband Davey Boy Smith, and for her book, Under the Mat.
[13][14] Hart grew up with eleven siblings; Smith, Bruce, Keith, Wayne, Dean, Ellie, Georgia, Bret, Alison, Ross and Owen.
[19] In 1995, she accompanied her husband to the ring for his WWF Championship match against Bret at In Your House: Season's Beatings, which Davey lost.
[20] In April 1996, the WWF began a storyline where Hart claimed that she was sexually assaulted by Shawn Michaels backstage at In Your House: Good Friends, Better Enemies in an attempt to play mind games with Michaels as her husband prepared to challenge him for the WWF Championship at In Your House: Beware of Dog.
In July 1997, Diana accompanied the Hart Foundation in their match at In Your House: Canadian Stampede, who defeated Stone Cold Steve Austin, Ken Shamrock, Goldust, and The Legion of Doom in the main event.
[27] She also appeared alongside her children to accept the posthumous Hall of Fame induction of her ex-husband as part of the class of 2020 (ceremony held in 2021).
[34][35] It was later claimed by Hart that the stories that were printed in the book were completely twisted and changed from how she had written them originally, and she was deeply hurt by the controversy that it caused her family because of it.
[39][40][41] Hart received a silver medal award by the Reader's Favorite in the category Sports Fiction for the book.
[51] In 2015 Hart appeared alongside her brother Ross on Shaw TV to speak about their father Stu's hundredth birthday.
They remained married until 2000, when the couple filed for divorce, and her son Harry followed his father and mother into professional wrestling.