Rob Kardashian has apologised for tweeting Kylie Jenner's phone number.

Rob Kardashian

Rob Kardashian

The 29-year-old television personality tweeted the digits belonging to his half-sister earlier this week in retaliation to what he thought was his fiancée Blac Chyna being snubbed from her own baby shower.

He tweeted at the time: "Didn't invite the Mother of my child to a baby shower you all were trying to throw for me ? You all must have lost your damn minds ,,, ... I ain't hacked either this is rob dog lol (sic)"

Now, the 'Rob & Chyna' star has apologised for his actions and said it was all just "miscommunication".

He said: "It was miscommunication on my end. I thought they weren't having Chyna at our baby shower. Chyna's baby shower is actually this Sunday (02.09.16), but they were trying to do a little surprise 'guy' baby shower for me and I was just upset trying to fight for Chyna like, 'Yo, she has to be at the baby shower. She's birthing my child. She needs to be there.' It was literally miscommunication and I probably shouldn't have went on Twitter, but I did."

And the sock entrepreneur also admits that his anger was misplaced, as the 19-year-old 'Keeping Up with the Kardashians' star wasn't the only one to blame.

Speaking on US radio show 'On Air with Ryan Seacrest' on Friday (30.09.16), he said: "I kind of took all my anger out on Kylie and my family. It wasn't just Kylie, it was my whole family. I went in on them on group text. And I was just being petty and posted [Kylie's] number."

The star then took the time to reach out to his younger sister, telling her that he loves her.

He said: "I'm sorry, Kylie, if you're listening. I love you, Kylie."

Kylie's number has now been taken out of circulation, and Rob claims his younger sister hasn't given him her new digits.