Kim Kardashian on Kanye West: 'Love Of My Life, My Soul'

Kanye West turned 36-years-old Saturday and his girlfriend Kim Kardashian shared a personal Instagram birthday card dedicated to the rapper for the world to see.

Kardashian, 32, expressed her love for West in an Instagram message complete with a collage of pictures of the couple.

"Happy Birthday to my best friend, the love of my life, my soul," Kardashian exclaimed on Instagram. "I love you beyond words!"

The "Keeping Up With The Kardashians" star was not the only one to wish the rapper a happy birthday publicly. Khloe Kardashian-Odom, Kim's 28-year-old sister, also took to the social networking website to create a digital birthday wish for the rapper.

"Happy birthday Yeez! Love having you in our family and us in yours," Kardashian-Odom wrote on Instagram. "Keep shining..."

Kardashian-Odom has been vocal about her approval for her sister and West's relationship.

"I think Kanye knows how to deal with Kim really well. Because we've known him for so long, he'll come to us if he wants advice on a birthday present or something," Kardashian-Odom revealed as the covergirl for the June issue of Cosmopolitan magazine. "I like that."

Kardashian has spoken about West being her best friend in the past.

"It's so nice to have a best friend in this game who understands everything you're going through," Kardashian told the British publication Tatlr magazine last year. "Being with someone I've known for so many years is comforting. I can't even think about being with anyone else than the man I'm with."

Kardashian revealed why she felt her relationship with her rapper boyfriend was different from those of the past that she made public, such as NFL player Reggie Bush, NBA player Kris Humphries and R&B singer Ray-J Norwood.

"He's been there through so many different stages of my life and before I was famous, so this relationship is a different thing entirely," Kardashian said of West in Tatler last year. "It's good to be aware that he definitely doesn't want anything from me too, because he understands the business."