Both first-time mothers are due to give birth in July, and Kim is said to have been very excited when she discovered their due dates are only weeks apart.
The 32-year-old socialite was reportedly so ecstatic to discover that the Royal baby is due in the same month as her own, that she sent 31-year-old Kate Middleton a good-luck note along with a gift.
Speaking to a UK newspaper, a source said:
“When Kim found out the pair had similar due dates, she got incredibly excited.
'She had her PA write a kind, warm note to Kate'
“She had her PA write a kind, warm note to Kate, enclosing a gift for the future heir to the throne and explaining they were both due in July.”
Perhaps hoping to upgrade her A-list circle of friends to blue-blooded heights, Kanye West’s babymama shared her extravagant baby findings with the more modest Middleton.
The insider added:
“Kim has now employed a top astrologer in Paris to draw up all the qualities of a 2013 Cancerian baby and is busy sourcing all the icons associated with Cancer the crab for the baby’s room.
“It will also be decorated with rubies and moonstones - Cancerian gems.
'Kim was a little saddened not to have received an immediate response'
“This was a piece of advice she was particularly keen to relay to the Duchess of Cambridge and was a little saddened not to have received an immediate response.”
The two mothers-to-be have approached their pregnancies very differently.
In true Kim style, she has shared her bump with the world on Instagram, landing regular headlines with her array of interesting maternity outfits.
In contrast, Kate has remained relatively private about her pregnancy, covering her considerably smaller bump with more modest outfits, while maintaining her royal duties.