Kim, 32, has kept a low profile since the arrival of baby North last month but she has now emerged and thanked her fans for their kind wishes.
The new mum, who is in a relationship with rapper Kanye West, also said she is "fully embracing motherhood" alongside her famous family.
In a message posted on her official website, Kim said: "Hey guys, these past couple of weeks have been filled with the most exciting experiences of my life.
"I'm enjoying this time to fully embrace motherhood and spend time at home with my family."
Kim added: "I've been reading all of your messages and want to thank you all for your sweet thoughts and best wishes. It truly means everything to me.
"I am so blessed to have the support of my family and fans in this beautiful moment. Xo. With love, Kim."
Reality star Kim gave birth to her and Kanye's baby girl on 15 June but she has not been seen in public since.
Earlier this week, Kris Jenner told viewers watching her own talk show that she "couldn't be more proud" of her daughter and new granddaughter.