Kaley Cuoco
Kaley Cuoco and Karl Cook attend The 22nd Annual Critics' Choice Awards in 2016 Getty

Kaley Cuoco took a trip to Australia with her boyfriend Karl Cook's family and documented her vacation Down Under with the help of several snaps on social media.

She shared a snap of herself on Instagram, where she and Cook are seen wearing matching bright accessories and candidly laughing. In another picture, she is seen enjoying a meal with Cook's parents, Signe Ostby and Scott Cook.

The Big Bang Theory star thanked the Cook family for "trip of a lifetime" as they spent time in Sydney and the Northern Territory outback. She captioned the post saying, "We didn't have any fun at all on this trip ✈️✨ thank you Cook family for another trip of a lifetime ... and thank you @mrtankcook for being you."

Fans of The Big Bang Theory star have loved the couple's vacations pictures as one user said, "You both always look so happy and in love." another noted, "Thank you for sharing! We love seeing you happy!"

"You are so cute together !!! ❤" said a follower of the CBS star. One user called them "genuine" and wrote, "Just so you know, you are my favorite couple to follow on Instagram.... you two just look so happy and it's genuine not anything posed. It's adorable."

"I am really glad to see that you are having such a great time enjoying life I haven't seen it before," a user said of the couple.

A follower shared her personal story of how Cuoco's show The Big Bang Theory saved her life. "U are so adorable. Love your insta stories too. Btw your show saved my life when I lost my daughter at birth. Was the first time I laughed in six months," the comment read.

The 31-year-old actress is dating the equestrian since 2016, who too documented their trip by posting several photos on Instagram.

Sharing a hilarious image of Cuoco from their hiking trip, he wrote, "So if anyone was wondering what a six mile hike over loose rocks is like with the love of my life.......well......we have never been happier, together...in his moment."