The couple, who have been engaged for exactly seven months, tied the knot on Saturday, Jun. 30.
Cuoco's character Penny has been married to Johnny Galecki's Leonard since 2016 on the show, roughly the same amount of time Cuoco and Cook have been dating. They got engaged on the actress' 32nd birthday, Nov. 30, 2017.
The couple announced their wedding to the public in a stunning black-and-white photograph of them sharing a romantic kiss in a beautifully-adorned stable. The image was captioned "legally KCSquared 6-30-18."
Cuoco proved herself a quick-change artist on the day as well, shifting from her lace wedding dress and cape ensemble into a low-cut lace jumpsuit for the wedding reception. She even changed her hair from a low messy bun to a high messy ponytail. After all, reception dancing is hard work, and you're gonna want to get that hair off of your neck.
The "KCSquared" motif was seen throughout the wedding, from table decorations, to the desserts, as "Big Bang" co-star Mayim Bialik spotlighted in her own Instagram post. Fellow co-star Galecki was also seen in attendance, where he took a picture with the new couple, adorably cropping out half of the bride's face.
Cuoco enjoyed a two-year secret relationship with Galecki nearly a decade ago when "The Big Bang Theory" was still new. The two have remained close friends. Cuoco was previously married for 21 months to tennis star Ryan Sweeting.
"The Big Bang Theory" finished its 11th season as the top-rated series by total viewers after four straight years in second place. It returns for its 12th season in the fall on CBS.