The first photo shows the newlyweds embracing each other after being pronounced man and wife, while another shows them walking down the aisle as smiling guests look on, News.com.au reported.
The 33-year-old reality TV star also posted a snap of her unusually demure custom long-sleeved white-lace Givenchy Couture gown, which was designed by Riccardo Tisci.
The couple wed last weekend in Florence in front of 200 close friends, including John Legend and Chrissy Teigen, Jaden Smith, and rapper Tyga.
Kardashian's mother, Kris Jenner, also posted a photo of her daughter's wedding dress from behind.
With agency inputs