'Big Bang Theory' star Kaley Cuoco marries Karl Cook in horse-themed ceremony

Kaley Cuoco surprised fans by announcing her marriage to Karl Cook. (Cuoco Instagram)

Kaley Cuoco says she and her fiance, professional equestrian Karl Cook, got married over the weekend.

The couple tied the knot on Saturday in a horse stable near San Diego, California, People reported.

After the ceremony, Cuoco shared a black-and-white photo kissing her new husband in a stable. The "Big Bang Theory" star is an avid horseback rider and Cook is a professional equestrian.

Cuoco, 32, wore a lacy gown with a matching cape and Louise et Cie Heels. Her ensemble was designed by Reem Acra. Cook, 27, kept it classic with a traditional black tuxedo, according to Page Six.

“Legally KCSQUARED 6-30-18,” she captioned the image.

For the reception, Cuoco changed into a lacy white jumpsuit while Cook continued wearing a traditional suit with a black tie.

The ceremony was filled with lovely touches, including personally written vows.

Cuoco’s sister, Briana, even officiated the ceremony and quipped to guests that she got her license from an online course.

Cook proposed on her 32nd birthday.

“Well after nearly two years I finally got up the courage to ask her to marry me,” Cook announced on Instagram. “This is the best night of my life and I think the video shows it is the best night for Kaley as well…”

This is Cook’s first marriage and Cuoco’s second. She previously was married to tennis star Ryan Sweeting, but they divorced in 2016 after just 21 months together.

Fellow “Big Bang” actors Mayim Bialik and Johnny Galecki wrote about the wedding on their Instagram accounts.

“Yes we are thrilled to be at @normancook and @mrtankcook ‘s gorgeous wedding and it’s super fun,” Bialik captioned a collage that included a photo of her and Wil Wheaton, who also appeared on the show. “Right @itswilwheaton !?”

Galecki shared a photo of himself with the bride and groom.

“Deepest congrats to the newlyweds,” he wrote in part.

Cook, 27, wrote about getting hitched on his Instagram account on Sunday.

“Good morning honey, I love you, and I’m sorry,” he wrote. “I am still processing the greatest night of my life marrying the love of my life! I mean god damn that dress was amazing!”

Fox News' Zoe Szathmary contributed to this report.