In the first shot, Kai is seen wearing a pair of reindeer antlers on his head with a green top and red and white-striped tights. He is pictured playing with a Buzz Lightyear toy, from the movie Toy Story, along with other toys.
The 25-year-old had affectionately captioned the photo as "My little elf", the Daily Mail reported.
In the other snap, the little boy is sporting a tiny Santa suit, complete with a hat and black belt, as he reads or rather plays with a Christmas book. Coleen wrote about the photo “And santa’s little helper!!!”
The TV presenter, columnist and model has been inundated with comments about her cute son, including from Emmerdake actress Charley Webb. “He is TOO cute! X” Webb had commented on the photograph.