Well, 15 years went by in a new york minute.

While Mary-Kate and Ashley Olsen were walking the red carpet a the 2019 Met Gala on Monday night, 15 years ago, they were celebrating the premiere of New York Minute

Though the 32-year-old fraternal twins are now fashion moguls, rarely stepping out at major events, they were once the most famous teenagers in the world after turning their early success on Full House into a billion-dollar empire.

Thanks to the success of their straight-to-DVD movies (released through their own production company, Dualstar), TV shows, and clothing line, the sisters have ranked on Forbes' list of America's Wealthiest Celebrities since they were 16 and have an estimated combined net worth of around $300 million.

But New York Minute was a big swing for Mary-Kate and Ashley back in 2004...and their last Hollywood hurrah, though their devoted fans didn't know it at the time. 

Before they decided to go to NYU and retreat from the public eye, New York Minute marked the Olsens first starring roles on the big screen since their 1995 film It Takes Two, which they filmed when they were eight years old. 

After that, Mary-Kate and Ashley starred in 20 straight-to-DVD releases, including their popular You're Invited franchise, along with two TV series, Two of a Kind and So Little Time, as well as an animated TV series. Given their obsessive following (Guilty as charged!), a return to the big screen seemed like a no-brainer for the sisters as they approached their 18th birthday. 

But New York Minute ended up flopping in a major way, before going on to become a campy relic of Mary-Kate and Ashley's acting careers now that they are celebrated fashion designers. In honor of the movie, which would end up being one of the sister's last acting roles ever, we're heading back to the Big Apple to reveal some surprising facts you might not know about the twins' final movie together...

Mary-Kate Olsen, Beastly

CBS Films

Mary-Kate Olsen, Ashley Olsen, New York Minute

Warner Bros.

Mary-Kate Olsen, Ashley Olsen, Jared Padalecki, New York Minute

Warner Bros.

Mary-Kate Olsen, Ashley Olsen, New York Minute

Warner Bros.

Eugene Levy, New York Minute

Warner Bros.

Simple Plan, New York Minute

Warner Bros.

Candace Cameron Bure, Bob Saget, Ashley Olsen

Ilya S. Savenok/Getty Images for Scleroderma Research Foundation

Full House Cast, New York Minute Premiere

L. Cohen/ Contributor/Getty Images

Brie Larson, Lori Loughlin, Emma Roberts, New York Minute Premiere

SGranitz/WireImage

Dr. Drew Pinsky

Michael Buckner/Getty Images

Mary-Kate Olsen, Ashley Olsen, Jack Osbourne, New York Minute

Warner Bros/Kobal/REX/Shutterstock

Avril Lavigne

John Parra/Getty Images for Clear Channel

Mary-Kate Olsen, Ashley Olsen, Winning London

Warner Bros.

Mary-Kate Olsen, Ashley Olsen, Met Gala 2006

Rabbani and Solimene Photography/WireImage

Mary-Kate Olsen, Ashley Olsen, New York Minute Premiere

Sylvain Gaboury/FilmMagic

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