Kaley Cuoco married equestrian Karl Cook this weekend.
The message accompanied a wedding photo, showing Cuoco in a lace gown and Cook in a tuxedo, standing face to face in a horse stable decorated with flowers.
A second photo captured the moment Cook tried to kiss his grinning bride, who had changed into a lace, lowcut jumper.
The image was captioned: "Ok let's party!!! #kcsquared."
Cuoco and Cook announced their engagement in December.
Kuoco celebrated her impending wedding at a bachelorette party with family and friends last week.