Kim Kardashian travelled to Armenia with her children where her sons Psalm and Saint and youngest daughter Chicago have been baptised.
The reality star, 38, headed to the Vagharshapat with all four of her children, including eldest daughter North, as well as older sister Kourtney and her children Reign, Penelope and Mason.
Video footage shared on Kim's Instagram account shows her walking into a cathedral carrying four-month-old Psalm, wearing a long grey slip dress.
The rest of the family wore complementary light colours for the occasion.
Kim later shared a photo from inside the venue, captioning it: "Holy Etchmiadzin, one of the most ancient Christian cathedrals in the world."
A source confirmed to PEOPLE magazine that all three of Kim's younger children were baptised on Monday morning. North, six, was previously baptised at the Armenian Apostalic Church in Jerusalem, Israel in 2015.
The Kardashian family's ancestors were Armenian and the famous sisters previously travelled to the country in 2015, in an emotional trip which included a visit to a memorial commemorating those who died in the Armenian genocide in the early 20th century.
Prior to the baptism ceremony, Kim shared her excitement at being back in the country, writing on Twitter: "Almost 3am in Armenia and I can't sleep! I'm so excited to be here and see everyone!"
She is also set to attend the World Congress on Information Technology during her visit.
Discussing her faith in an interview last year, Kim described her family as "really religious" and said that her mother Kris Jenner sends them all a Bible verse every day.
"We don't share it much, but we are really religious," she told Vogue. "We start our day with a group chat with a Bible verse from my mum, and everyone chimes in on the meaning of it.
"We are very Christian - and our work ethic and our discipline comes from so many years of Catholic school."