Jewelry experts estimate that Kim Kardashian's birthday necklace from North West is valued at around $20,000. Get more details on the custom piece.

North West gifted her mom Kim Kardashian a present with an iconic YouTube reference for her 44th birthday.

Kim Kardashian celebrated her 44th birthday on Monday, October 21, and her celebration was complete with lavish gifts. But one of the more surprising gifts came from her 11-year-old daughter, North — who left an unexpected message inside.

Kim Kardashian is baffled over her birthday present from her daughter North West! On Monday, Oct. 21, the SKIMS founder shared a video of her daughter North, 11, gifting her a diamond necklace for her 44th birthday — which displayed a very strange engraving on the front.

Kim Kardashian just celebrated her 44th birthday on October 21. For the special occasion, her four kids - North, Saint, Chicago, and Psalm - had the most heartwarming and adorable birthday decorations ready for their mom.

Kim Kardashian is giving the term 'birthday suit' a whole new meaning. While she didn’t go fully nude to celebrate her 44th birthday, the reality star got about as close as she could, as evidenced by her latest Instagram Story.

The reality star had a surprised reaction to the diamond necklace, which was gifted by her 11-year-old daughter