When Tiffani was 8, her uncle, , suggested that she.
In 1994, after her tenure on Saved by the Bell had ended, Thiessen landed the role of in 's -produced hit teen-drama , to fill the void after 's departure.
In 1999, she went through a difficult period in her personal life, when , also an actor, whom she had begun dating, committed suicide.
Interior designer Lonni Paul, one of the final three contestants of the season, was given the task of redesigning Thiessen's guest bedroom with an eco-friendly theme; Thiessen and Paul now have a nursery furniture line called PetitNest.
The role eventually went to.
In 2003, she launched her production company Tit 4 Tat Productions, producing and directing the short film Just Pray in 2005, which earned distinctions at several film festivals, including winning Best Score at the Rhode Island International Film Festival, an Academy Award qualifying festival.