Kaley Cuoco Calls Wedding 'Greatest Night of My Entire Life' Get the details of the 'Big Bang Theory' star's big day, and her wedding gown.

Jan. 1, 2014  -- Talk about a way to "ring" in the New Year!

Kaley Cuoco married Ryan Sweeting on New Year's Eve, a rep for the actress told ABC News, and now, the "Big Bang Theory" actress can't help but gush about it.

"Greatest night of my entire life :) @ryansweething," she wrote on Instagram, along with this new photo.

Earlier in the day, sheposted another photo of herself in her pink wedding dress. The caption read: "Yep :) #thesweetings."

The actress, 27, and tennis pro, 26, wed in Southern California after confirming their engagement a few months earlier.

For the occasion, Cuoco wore a pink Vera Wang gown, replete with a hand-gathering detailed bodice and hand appliqué Chantilly lace accents. After exchanging vows, she slipped into a short red party dress.

READ: Check Out Kaley Cuoco's Pre-Wedding Celebrations

It has been a whirlwind romance for the couple who began dating this summer.

Cuoco posted a pic last week of the two with the caption, "1st Christmas together! Killed it!"

RELATED: Kaley Cuoco Surprises Parents With New Car for Christmas

Also, while on "Ellen" a few weeks back, Cuoco gushed about how happy she was with her soon-to-be husband.

"You know by day two I was like, 'Oh, my god.' It was so unbelievable," she said of her new beau. "I said, 'This is it, this is it.'"