News A Reminder That Mary-Kate Olsen Is a Horseback-Riding Champ By Alexandra Whittaker Alexandra Whittaker Instagram Twitter Website Alexandra Whittaker is a news and pop culture editor based in New York City. She studied at the Medill School of Journalism at Northwestern University and at Marquette University, where she freelanced for USA Today, Women's Wear Daily, and ELLE. She currently leads both the news and entertainment teams at Cosmopolitan magazine and previously worked as the news editor of InStyle.com where she spearheaded awards coverage. She enjoys writing and editing news stories, interviewing celebrities, and covering the intricacies of the British royal family. InStyle's editorial guidelines Updated on August 30, 2017 @ 10:45AM Pin Share Tweet Email Mary-Kate Olsen may be a world-famous fashion designer, but she's also got a pretty cool side hobby—competing in equestrian shows. Yes, the actress-turned-fashion mogul has a passion for horses and on Tuesday she showed it as she took part in the Hampton Classic Horse Show in Bridgehampton, New York. Rob Rich/WENN.com Olsen and her horse rode around the course, jumping hurdles and trotting through the grounds, but competition regulars probably weren't too surprised to see her there. The star has been seen riding in the annual competition since 2013, and she's been riding horses since she was a child actor making movies with her twin Ashley Olsen. VIDEO: Watch Mary-Kate and Ashley Olsen Grow Up Before Your Eyes She and her horse Dunotaire V did a pretty good job too: They placed sixth and won a $200 prize in the amateur owner jumper (1.20 meter) category on Tuesday. Elizabeth Olsen Got Media-Trained by Her “Notoriously Tight-Lipped” Sisters Mary-Kate and Ashley Watching Mary-Kate really makes us feel like re-watching some of her horse-centric films. Anyone up for It Takes Two?