Kim Kardashian West “can’t imagine life without” her brother Rob Kardashian.

Kim Kardashian West's Instagram (c) post

Kim Kardashian West's Instagram (c) post

The ‘Keeping Up with the Kardashians’ star took to Instagram on Wednesday (17.03.21) to ring in her younger brother’s 34th birthday, where she praised Rob – who has made many appearances on the family’s E! reality show but has been reclusive for several years – as a “crazy funny person”.

Alongside a photo of herself and Rob dancing at a party, Kim wrote: "Happy Birthday Robbie! We've made so many amazing memories this last year that will fill my heart for a lifetime. I'll never forget this night a few months ago dancing the night away (yes people I danced) and our boat & whale and even shark adventures LOL.

"The way our daughters are besties warms my heart so much! I love you more than anything and am always here for you! I am so tempted to screenshot just some of our group family chat to give people a glimpse of the crazy funny insane person you are!! I LOVE YOU (sic)”

In a second post shared to her Instagram Story, she added: "I love you so much and can't imagine life without you!"

Rob – who has four-year-old daughter Dream with his ex Blac Chyna – also received birthday tributes from his mother, Kris Jenner, who described her only son as “the light” of her life.

She wrote: "Happy birthday to my funny boy @robkardashianofficial who is the light of our lives!!! You make us laugh constantly and are always so loyal and supportive to us all. Rob you are the greatest daddy, son, brother, uncle, grandson and friend!!!

“You are the kindest most thoughtful, generous soul I know and I am beyond blessed to be your mom. I'm so proud of the man you have grown into and I am in awe watching you as a Dad... you are truly the best most incredible daddy to Dream. You are such a huge part of my heart and I love you. Have a magical day (sic)”

And the Arthur George sock founder’s other two sisters, Kourtney and Khloe Kardashian, each posted their own sweet messages on Instagram.

Kourtney penned: “Happy Birthday to my actual soulmate @robkardashianofficial You are one of a kind, make us all laugh until we cry, with the ultimate sweetness and memories to last us until all eternity. I am so blessed to call you my brother. I love you for life and after. (sic)”

Whilst Khloe added: "Happy birthday to the best brother in the world!!! You've been my best friend since the minute you were born and we will Be best friends until the end of time, through every lifetime together.

"I want you to know how proud I am to be your sister. PROUD!!!! I would do anything for you! You are my best friend! The funniest guy I know! Literally, I always end up crying from laughter when I'm with you. Never change your sweet and hysterical spirit!! Continue to find your best self. Continue to keep your head held high as you find your way through this insane life. Grow strong, powerful and independent. You got this Bob!

“You are enough! You always will be!! I will love you forever and always. Tonight, we drink like kings!!! *** said in my best @robkardashianofficial voice*** (sic)”

The tributes didn’t stop there, as Rob’s half-sister Kendall Jenner also posted a message on social media to mark the occasion.

On her Instagram Story, Kendall wrote: “happy birthday bob!!! @robkardashianofficial you make me smile, I love you!!! (sic)”

As of the time of writing, Kylie Jenner is yet to publicly celebrate her half-brother’s birthday.