ROB Kardashian has made a rare appearance in a new photo on Khloe's birthday and gushes about how he's "thankful" for his big sister.
The Good American co-founder, who turned 39 today, has received numerous "Happy Birthday" wishes from both family and friends.
Rob, 36, shared a photo of himself and Khloe as well as a selfie of The Kardashians star with his daughter Dream, six, on his Instagram Tuesday.
The 36-year-old donned a fitted baseball cap for the first photo as he and his blonde-haired sister smiled at the camera.
The section captured the reality TV star pursing out her lips as she made a kissy face next to a grinning Dream.
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He captioned the post: "Happy Birthday @khloekardashian."
The Keeping Up With the Kardashians alum continued: "Wishing you nothing but good health and happiness forever my darling buttercup!
"I love you so much and so thankful to have u in my life and for all that U do for Dream and I. I don’t know what I would do without you."
In the post's comment section, Khloe responded: "My baby!!!! My favorite human being in the world. You’re my heartbeat."
Back in March, the 39-year-old mother of two shared an emotional Instagram post dedicated to Rob on his 36th birthday.
Khloe shared several recent and throwback photos of herself with her younger brother on Friday.
One, black-and-white, snapshot captured the Hulu star forming her signature pout while Rob grinned beside her while another photo showed the pair as children sitting together at a restaurant.
The Los Angeles native even included a brief video of Rob as a baby, dressed for both his birthday and St. Patrick's Day, with their father Robert Kardashian, Sr.
HEARTWARMING MESSAGE
Khloe captioned the post: "It’s one of my most favorite days because it’s one of my Most favorite human being’s birthday!! My baby bobby boy.
She continued: "My wish for you is a thousand wishes And for them all to come true. That you wake up one day and you know with everything inside your being that you are enough. You’ve always been enough.
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"My wish is that you feel what anyone feels when they are in your presence, complete bliss and respect! You make people feel safe and that they are home when they are around you. I pray you realize that WE are the lucky ones because we have you."
The mother-of-two would go on to write that she wishes her brother will be "deeply and sublimely happy," and for "deep peaceful happiness" to enter Rob's life and never leave his side.
Khloe wrote: "My wish is that you continue to do things that push you outside your comfort zone. Let this season be what it needs to be. Let it shape you how it is destined to. Tell people that you love them, often, and that you appreciate them. Be the greatest person you can possibly be. Do things that make you proud."
The TV personality advised her brother to "believe" in himself and his "journey" and to "continue to be humble."
"Let go of the pressure that your past has put on you. Thrive at your own pace. The secret is, just be better than you were yesterday. The desire is to Do it all for you and you alone."
The former E! star admitted that she "couldn’t be prouder" to call Rob her brother, before adding, "I couldn’t be luckier that I get to call you whenever I want about absolutely nothing."
"I thank God every day for our relationship and the relationship with our children. God always had a plan!! I thank God that you and I both have the weirdest humor. I couldn’t be more blessed or excited that I have an entire lifetime with you!"
In closing, Khloe stated: "Genuinely you are one of the most loving, hysterical, gentle and majestic human beings I’ve ever known. Being your sister is an absolute privilege. I will forever protect you my beautifully brave brother. Happy birthday king @robkardashianofficial."
In the post's comment section, one person wrote: "You write the best birthday captions," while also adding, "HBD Rob!!"
Another fan commented: "I’ve waited all day to get this cry over with thanks queen."
While a third commenter stated: "Khloe writes the best captions for her siblings [sic] birthdays."
MAMA'S SUNSHINE
Khloe's mom Kris Jenner, 67, shared a heartfelt post to her daughter on her birthday.
The momager showed various clips of home videos of Khloe growing up as well as some recent clips with her daughter, True.
Khloe's other siblings, Kourtney, Kim, Kendall, Kylie, and rarely-seen Rob also made appearances.
In recent years, Rob has decided to stay out of the spotlight.
The momager shared a lengthy Instagram post to her daughter: Happy birthday to my beautiful bunny @khloekardashian!!!! Khloé you are the sunshine of my life… You are the most amazing daughter, mommy, sister, auntie, best friend, neighbor, and such a huge part of my heart!!!!!
You are so smart, strong, talented, beautiful inside and out, kind, sweet, thoughtful, creative, funny, and witty. You are the best chef, best party planner, best organizer, and you are the auntie and mommy that everyone wants to be with!!!
You are the one that celebrates all of us. You are the best and most incredible cheerleader to everyone!! You are the life of every party!!! I thank God every day for the blessing of being chosen to be your mommy.
I love you more than you will ever know and I cherish and treasure every single moment we get to spend together. Mommy xo song: You Are the Sunshine of My Life by Stevie Wonder."
