'I miss you' Khloe Kardashian posts heartfelt message to brother Rob

KHLOE Kardashian has reached out to her estranged brother Rob in the best way she knows how – Instagram.

    THROWBACK: Khloe Kardashian was obviously feeling sentimental

The reality star shared a black and white throwback picture of the siblings in happier times.

In it, a much slimmer Rob plants a kiss on his sister's cheek and the 31-year-old captioned it: "It's simple… I miss you."

Big sister Kourtney Kardashian retweeted the photo and added: "True love."

Recently, the only person Rob's been seen kissing is new girlfriend Blac Chyna.

   HAPPIER TIMES: Rob and Khloe used to be very close

His relationship with the former stripper hasn't done anything to help get him back into his family's good books.

It was reported that momager Kris Jenner had forced Kylie Jenner to include Rob's sock line in her Valentine's packages for a local charity.

But it would seem like more than socks are needed to mend their relationship after Kylie implied he was a demon in a now-deleted Instagram snap.

He is dating the mother of her boyfriend's baby, though.

   DISGUISE: We can see you snogging you two

   SKINCARE MEETINGS: Rob and Kim Kardashian were both seen at the same dermatology 

   clinic

Blac – real name Angela Renee White – has a son with Tyga, who has been on and off with the youngest of the Kardashian more times than a pair of Rob's socks.

And the model was seen kissing 28-year-old Rob while wearing a green tracksuit that showed off her huge rear.

The couple were visiting a dermatology clinic, where Kim Kardashian and BFF Jonathan Cheban were spotted a little while later.

Secret family meetings over skin care, maybe?