The ‘Keeping Up With The Kardashians’ star proved that she still cares for her brother, who is dealing with undisclosed issues in his personal life, by sharing a photo of the two of them on her Instagram page.
She added: “If only you could see yourself through my eyes! I'll forever be obsessed with you! My one and only! #MyAce”
Khloé and Rob have always had a close relationship, and she previously posted a similarly touching message on his birthday back in March.
She said at the time: “Never will I ever meet another man as great as you! I know this is the year where you will find your happiness again!
“I will be right by your side, holding your hand, every step of the way!!! I adore you my one and only brother!!”
Open Image Modal
Rob and Khloé in 2012
Rob is rarely seen in public or on social media nowadays, and he's also no longer in the cast of the E! reality series, ‘Keeping Up With The Kardashians’.
Following this, he later had something of a Twitter meltdown, and unfollowed everyone on his account, apart from Khloé.
Rob Kardashian: 9 Facts In 90 Seconds
Rob Kardashian(01 of09)
Open Image Modal
1. Rob Kardashian was born on St.Patricks Day (March 17) in 1987 (credit:Getty Images)
Rob Kardashian(02 of09)
Open Image Modal
2. He still sleeps with a baby blanket made for him by his nan. It even has a name - Kiki. Oh dear. (credit:Getty Images)
Rob Kardashian(03 of09)
Open Image Modal
3. He claims to change his phone number 10 times a year and I doesn't ever save his contacts. Fickle. (credit:Getty Images)
Rob Kardashian(04 of09)
Open Image Modal
4. Don't tell Kim, but his favourite sister is his youngest sibling, Kylie (no, not that one). (credit:Getty Images)
Rob Kardashian(05 of09)
Open Image Modal
5. He suffers from OCD. How do we know this? “I reorganize my closet nearly every week and sanitize all the phones in my house weekly,” he told US magazine. (credit:Getty Images)
Rob Kardashian (06 of09)
Open Image Modal
6. He came second on the 13th series of 'Dancing With the Stars' - the US version of 'Strictly Come Dancing'. Sister Kim only managed 11th place. (credit:Getty Images)
Rob Kardashian (07 of09)
Open Image Modal
7. Rob confirmed through his Twitter account that he and Rita Ora were dating in October 2012 but it was all over two months later. He later blamed the split on her for 'sleeping with 20 men' which he announced to his 4 million+ followers. She was NOT impressed. (credit:Getty Images)
Rob Kardashian(08 of09)
Open Image Modal
8. He is also an aspiring model, even considering dropping out of college in order to pursue that career. (credit:Getty Images)
Rob Kardashian(09 of09)
Open Image Modal
9. Was in a relationship with Adrienne Bailon of US girl group, The Cheetah Girls between 2008 and 2009 (he has a huge tattoo on his left pectoral of her name). Think Brian McFadden and Kerry Katona, but American. (credit:Getty Images)