updated 01/01/2014 AT 3:00 PM ET
•originally published 01/01/2014 AT 3:30 PM ET
Her smile says it all – Kaley Cuoco had a huge grin as she posed for a fun pic with her new husband, Ryan Sweeting, at her wedding reception Tuesday night.
“Greatest night of my entire life,” the 28-year-old captioned the pic, which shows her tennis pro hubby engulfed in her pink Vera Wang gown.
She followed it up with a shot of their first dance as husband and wife, captioning it, “Last night I married my sweetheart :) life couldn’t be sweeter.”
“#Bestnightever #love #magic #amazing,” posted makeup artist Jamie Greenberg, who was a guest at the wedding and shared a pic on her Instagram account.
“Congratulations to @KaleyCuoco on her new year’s eve wedding,” her costar Mayim Bialik Tweeted. “Yay kaley and ryan!”
The couple announced their engagement in September, just three months after they were first spotted together.