LOUISVILLE, Ky. (WDRB) -- A sitcom star made a guest appearance in the Bluegrass state.

"Big Bang Theory" actress Kaley Cuoco visited Bourbon County, Kentucky on Monday, according to WKYT.

Cuoco, who portrays Penny on the popular comedy, visited Claiborne Farm to check out some horses.

The following post was placed on the farm's Twitter account:

Cuoco is a well-known equestrian. She owns several horses and competes in jumping.

Her fiance, Karl Cook, is also an equestrian. In April, he competed in Lexington at the CS13 Invitational Grand Prix during the Land Rover Kentucky Three-Day Event.

According to its website, the farm has been the birthplace of several Kentucky Derby champions, including 1986 winner Ferdinand, 1995 victor Thunder Gulch and 2013 champ Orb.

Legendary Triple Crown champion Secretariat is buried at the farm.

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