Rob Kardashian has tweeted Kylie Jenner's phone number after she failed to invite Blac Chyna to her own baby shower.

The 29-year-old reality star has blasted his family for snubbing his fiancée at a party they wanted to throw for him to mark his impending fatherhood, so got revenge by urging his followers to contact his 19-year-old half-sister.

He posted Kylie's number and then also tweeted: ''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 ,,, (sic)''

Along with the digits themselves, the 'Rob & Chyna' star made it clear that this wasn't part of a hacking scandal, as he wrote: ''I ain't hacked either this is rob dog lol (sic)''

The Lip Kit mogul hasn't taken to Twitter to respond, and the number Rob tweeted is now said to be unavailable.

Rob's relationship with Chyna had been met with animosity by his family in the beginning because she has a three-year-old son, King Cairo, with Kylie's boyfriend Tyga.

And though relations seemed to have thawed in recent months, the sock designer has admitted he was reluctant to discuss his new-found happiness with the rest of his family when he fell for Chyna because of the awkward circumstances.

He said recently: ''I couldn't really feel comfortable about talking to any of my family members obviously about the situation. It was very, very complicated. But my happiness outweighed everything honestly at that point in my life.''

Before finding love with Chyna, Rob had retreated from the spotlight as he battled depression and weight gain and believes the 28-year-old beauty has saved him.

He explained: ''Sometimes your family can't get you out of the worst place that I was in. I needed an outsider to help me. I couldn't do it all myself. Chyna helped me through my rough time. I was uncomfortable in my skin, just trying to get over that uncomfortable feeling. She really helped me get past that [feeling of] being judged.''