"The Big Bang Theory" star, 27, and the athlete got engaged in September after just three months of dating. Over the weekend, friends and family threw Cuoco a bridal shower.
Last week, the actress held a mini getaway with her closest friends in Palm Springs. She invited sister Briana, actress Lacey Chabert and close friend Amy Davidson, among others to the bachelorette-like party.
According to Usmagazine.com, the couple plan on getting married on Dec. 31. The ceremony will reportedly take place in Southern California, and the reception will feature a "fire and ice" theme.
Cuoco recently revealed she wants a dog-shaped wedding cake because she's obsessed with animals: "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."
She added, "I might ride in on one of my horses. I secretly kind of want to do that."