And in the latest addition, Katie has shared a rare picture of 8-month-old baby Jett, who is seen gazing lovingly at his older brother Harvey, 11, who is reading to him.
The family look to have had a fun fuelled time on the Cape islands, which are just off the coast of West Africa.
Katie has already shared several revealing snaps from her holiday to the country - including ones showing off her toned figure as she sunbathes in the 30 degree weather.
The former glamour model also shared images of her and four children - Junior, Harvey, Princess and Jett, on board a boat, with both boys taking a turn at the wheel.
Husband Kieran Hayler has also been enjoying the sunshine with the family, and the couple have posted several romantic snaps of them on the beach and relaxing on a sun bed.
But if all of this was a little too jealousy inducing for you, don't worry, it sounds like Katie could be on her way back to Blighty, with her tweet this morning reading: 'Last holiday snaps from Cape Verde.' Let's hope she brings the sun with her!
