The 'Big Bang Theory' actress, who got engaged to tennis player Ryan Sweeting this summer, went on a girls' getaway with her closest friends to Palm Springs in California.
The 27-year-old travelled with her sister Briana, 'Mean Girls' star Lacey Chabert and close friend Amy Davidson, among others.
Amy, who starred alongside the beauty in the series '8 Simple Rules', shared a photograph of the soon-to-be Mrs Sweeting on Instagram while posing in a 'bride' T-shirt and mini veil.
She captioned the photograph: "#girlsweekend Shenanigans!! I want to go back!!"
Kaley's sister also shared an Instagram collage of the fun-filled weekend, which sees the girls relaxing by the pool and drinking cocktails, she wrote: "Best gals wknd everrrrrr."
Despite Kaley only getting engaged after three months of dating, she insists she has loads in common with her 26-year-old fiancé, and the couple have already started planning their big day.
She recently said she wants a dog-shaped wedding cake because she's obsessed with her pets.
The blond beauty revealed: "The whole farm's gonna be at our wedding. I'm a big animal freak. I'd rather have the animals there than real people."
"I just want everything the way I want it. That's the way it should be. I might ride in on one of my horses. I secretly kind of want to do that."
The loved-up couple are yet to set a date for the wedding.