The 35-year-old gave birth to baby Saint, her second child with rapper husband Kanye West, on 5 December (15) and in the first public image of her son, he is sharing a sweet moment with his older sister North West, two. The close-up shot feature's the tot's hand wrapped around North's finger.

Kim's caption indicates there is no sibling rivalry brewing at the family home just yet - it reads: "She said, 'He's my best friend'."

Kim experienced a difficult pregnancy while carrying Saint, with doctors confirming the baby was breech in her womb, weeks before she was due to give birth.

In October (15) she lamented about carrying a child in a candid blog post entitled How I Really Feel About Being Pregnant.

"I’m gonna keep it real: For me, pregnancy is the worst experience of my life! LOL," she wrote. "I don’t enjoy one moment of it and I don’t understand people who enjoy it."

After welcoming Saint into the world, Kim has moved on from the pains she suffered as a mum-to-be, and she is looking forward to fulfilling some personal goals in 2016.

A couple of her ambitions for the year include losing all the weight she put on while pregnant and learning to do the splits.

"In the next coming months I'd obviously like to shed the baby weight," Kim wrote in a blog post for her website on New Year's Eve (31Dec15). "That's the big one to accomplish first! I'd also like to finish our home next year, so we're working hard to make decisions and meet deadlines so it gets done. I'd like to do some really cool photo shoots for my website.

"I want to do a couple more fun weekend trips with my Twitter followers that I haven't met yet ... (and) I want to plan a West family vacation... Oh, I also want to learn how to do the splits LOL!"