The "Keeping Up with the Kardashians" star took to Instagram on June 8 to share the message, reported Ace Showbiz.
Uploading a photo of them kissing, the mother of one wrote, "Happy Birthday to my husband and best friend in the entire world! You have changed my life in more ways than you know! The way you look at life inspires me! I love you so much!"
The 33-year-old reality star also shared a glimpse at the birthday celebration, uploading a photo of West's birthday cake.
To celebrate her husband's birthday, Kardashian prepared six cakes which spell Yeezus, the rapper's latest album which came out in 2013.
Kardashian was not the only family members who wished West a happy birthday on social media. Her mother Kris Jenner also took to Instagram to share a photo of her with her "new son".
She wrote, "Happy Birthday to my new son #KanyeWest! Have an amazing day I love you... Thank you for being such an inspiration. #family #love."