The Big Bang Theory star also wore a black riding helmet and matching gloves.
Kaley had her blonde hair up in a messy knot and let her natural beauty shine without makeup.
The actress has been an equestrian for years and broke her leg in a September 2010 horse-riding accident that forced her to miss filming of two episodes of The Big Bang Theory.
Kaley has been in a relationship since 2022 with actor Tom Pelphrey, 41, and they have four-month-old Matilda together
She co-produced and co-starred in the upcoming thriller film Role Play set to be distributed by Amazon Studios.
The series with Kaley in the title role premiered on HBO Max in November 2020 and its second season concluded on May 26, 2022.