Tiffany St. Martin is a character from the Brat Universe who was featured in Crown Lake. She comes from a very wealthy family from New York, but lives in Crown Lake with her mom. She wears new clothes every month and has a lot of money on her crown lake bank account. Although she is snobby, shallow and spoiled and is mean in Crown Lake Academy, she has an extremely hard time at home with her family as her brother suffers from a mental illness. She is the niece of Headmistress Merriweather and the sister of Evan St. Martin. She plays the role as Nellie's roommate and friend, and also a victim of Heather. First she was enemies with Nellie, until they mostly made up during Saturday Detention. She is also seen to have a great sense of fashion and is seen working on a Tres Chic project on her computer,
At first, Nellie and Lucy thought Tiffany was the one calling the shots, so they wanted to kick her off her throne. Although they succeeded, they caused trouble to Tiffany. Nellie stuck to public embarrassment and not trying to bring up her family business, but Lucy secretly went against her and exposed Evan on the Tattle Wall. Lucy claims that it was an order given to her by Heather. At the end of season 2, it is confirmed that Tiffany isn't Heather Masterson, as she is clearly a victim of Heather like Nellie.
Tiffany is later forced to leave Crown Lake Academy after her father is arrested and her family go bankrupt. Despite this, Tiffany was apparently present during the Crown Lake fire. It is revealed in the season 3 episode that Nick's family helped Tiffany stay at Crown Lake by paying her tuition after her dad got arrested.
Although she and Ryan Baker broke up, they got married later in life.
Tiffany became the temporary Headmistress of Crown Lake when Chloe Hauser left for maternity leave when her wife had a baby. She proved to be strict and orderly but seems to have dealt with bullying better than her Aunt ever had.
In 1996 A Fire was started by Heather Masterson and nellie got blamed no clear weather other students had to transfer schools after the fire setting As a lot of damage was made by the fire. Lucy was working with heather
then so reveled that tiffany's old roomate who moved out and left a book so that nellie could come in revels that heather is a tradition of crown lake nellie mom was a bully to rose and nellie must do it to lucy .Template:Crown lake