10 Things You Didn’t Know About Mary-Kate Olsen

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9. Art Collector

She collects art. Her pieces include works by Andy Warhol, German photographer Thomas Ruff and the controversial Japanese photographer Nobuyoshi Araki.

A photo posted by Mary Kate Olsen (@marykateolsen__) on Feb 6, 2013 at 5:27pm PST

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8. Caffeine Addict

She loves coffee and she has since she was a child. “When I was younger, on weekends, my mom would make us pancakes with our initials on them and then a tiny cup of coffee,” she told W magazine. She quickly became an addict. “I remember at 10 sneaking my own coffee and pouring a ton of sugar in and going up to the playroom and drinking it.”

A photo posted by Mary-Kate & Ashley Olsen Style (@mkastyle) on Oct 2, 2015 at 11:21am PDT

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7. Connection to Heath Ledger

She was a close friend of Heath Ledger’s (although some people say that they were a little more than friends). When his masseuse discovered him dead in his apartment, the first person she called was Mary-Kate, who sent some of her security people to the scene.

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6. Self-Made Millionaire

Mary-Kate and her twin sister Ashley were reportedly millionaires by the age of nine thanks to their role on Full House, their clothing partnership with Wal-Mart, their adventure videos and detective-book series.

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5. A Struggle

She spent a month at Utah’s Cirque Lodge in 2004 where she was treated for anorexia. An intervention reportedly took place before her 18^th birthday.

VIPix/Abaca

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4. Not Identical

Mary-Kate and Ashley are not identical twins. Mary-Kate is about an inch taller and she’s left handed, whereas Ashley is right-handed.

Joe Seer / Shutterstock.com

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3. Favorite Movie

One of her favorite movies is the S&M romance Secretary. When she first moved to New York for school, she watched it at least one hundred times from her bed.

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2. Co-Presidents

When Mary-Kate and Ashley turned 18, they bought out Robert Thorne (who started Dualstar with them when they were six) and their parents and took sole control of the company.

Photo by Nicolas Khayat/ABACA.

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1. Beauty Icon

Her beauty icon is Lauren Hutton. “We were just talking about Lauren Hutton and how she’s such a woman in every single sense of the word. She’s known for her beauty but not because of how she looks, but because of who she is and what she stands for. She’s a more natural beauty who’s both approachable and relatable,” she told Elle.