And now the accomplished rider will be competing against other secret horse riding celebs at the Longines Los Angeles Masters event in September, reports NY Daily News.
Attended by the likes of Leonardo DiCaprio and Kate Winslet, the show jumping event is hoping to put on some entertainment in the form of competing celebs.
Should be a gallop in the park for Kaley, who has been training for years, and even got back on the horse after a nasty accident in 2010 nearly meant she had her foot amputated.
But the newly married actress isn't the only celeb in love with ponies. Kendall and Kylie Jenner, Miley Cyrus, Rihanna and Kate Middleton have all taken horse riding lessons.
How good is horse riding as a workout
Sure, horse riding isn't the most budget-friendly workout around, but it is a great form of exercise.
Not only does it build muscle strength and structure, it burns around 230 calories an hour, going up to 470 calories an hour for galloping and polo playing. Also mucking out and shovelling grain after your ride can burn 350 calories an hour.
It can also help beat depression as people who horse ride have increased levels of serotonin (a natural mood enhancer).
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