Rob Kardashian has returned to Twitter.

The 28-year-old reality TV star hadn't posted on the social media site since May 29 but returned yesterday (23.06.15) to offer his pregnant sister Kim Kardashian West, a cure for her morning sickness.

The 34-year-old beauty - who is expecting her second child with her husband, rapper Kanye West - appeared fed up of dealing with the nausea she's been experiencing, writing ''thought this nausea thing was supposed to be gone by now'',

However her younger brother was quick to reply and hinted that he had been aiding the star with her morning sickness over the phone.

He wrote: ''I sent u that voice note. It should help.''

And Kim was more than happy to share his words of wisdom with their fans.

She replied: ''Should I post it? I think people would love to hear the voice notes u send me! (sic)''.

The tone of the 'Keeping Up With The Kardashians' star's latest tweet is somewhat different to his previous post in which he compared Kim to that ''bitch from Gone Girl''.

However, a source close to the Kardashian family previously insisted the tweet was simply a private joke.

They said: ''He has a funny sense of humour and posts weird things and then deletes them. It's just him.''