Kaley Cuoco Joins Boyfriend Karl Cook and His Family on Australian Vacation -- See the Cute Pics!

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Kaley Cuoco is clearly part of the family!

The Big Bang Theory star looked right at home while vacationing with her boyfriend, Karl Cook, and his family in Australia.


WATCH: Kaley Cuoco Dishes on Her Death-Defying 'Bachelor'-Style Date With Boyfriend Karl Cook

"We didn't have any fun at all on this trip," Cuoco captioned a slideshow of pics from their getaway. "Thank you Cook family for another trip of a lifetime ... and thank you @mrtankcook for being you ❤️."

See more snaps from the trip below.


RELATED: Kaley Cuoco and Boyfriend Karl Cook Welcome a New Addition -- a Mini-Horse Named Shmooshy!

ET caught up with Cuoco in April, who said that despite catching a little "baby fever" from her friends, she and Cook are currently staying busy with their many dogs. 

See more in the video below.