Kim Kardashian Helps Rob Get Ready for Fatherhood: 'Nothing Will Prepare You For This'

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As Rob Kardashian prepares for first-time fatherhood, the reality star is getting some useful parenting lessons from his big sis, Kim Kardashian West.

In a new preview from Rob & Chyna, Kim gives her brother a swaddling demonstration with a fake baby doll.

EXCLUSIVE: Inside Rob Kardashian’s Baby Shower Drama

“They like to feel really tight like they’re still in the womb, for a few months,” explains 35-year-old Kim, who has two kids, North and Saint, with husband Kanye West.

“I’m going to need plenty more swaddling lessons ,” responds Rob, whose fiancée Blac Chyna is expecting a girl. “But I’m definitely happy with the progress that I’m making and I’m sure once I have my baby in my hands I’m going to figure it out and be a great dad.”

Following the baby wrapping demo, Kim adds the most important note about becoming a parent: “Nothing will really prepare you for this.”

WATCH: Rob Kardashian Meets Blac Chyna’s Extended Family, Gets Warning From Her Mom

While the siblings may be bonding over parenthood in the E! show, the clip comes amid new controversy between Rob and his sisters.

On Monday, the 29-year-old tweeted out his sister, Kylie’s, cellphone number along with an angry note calling out his family for not inviting Blac to a baby shower.

“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…” wrote the star.

WATCH: Rob Kardashian Shares Sweet Message for Future Daughter

However an insider tells ET that Rob misunderstood the whole baby shower situation and is convinced that his family doesn’t like his fiancée, when, in fact, they adore Blac.

“They absolutely adore her and thank her every day for coming into Rob’s life and changing him. He’s such a better person with Chyna, and all the girls see that,” says our insider. “They didn’t like her in the beginning given the situation, but they have really grown to like her as a person and for Rob.”

The source adds that Chyna's romantic history with Kylie's current boyfriend, Tyga, is also causing Rob stress. “Chyna was one of Kim’s very close friends even before the entire Tyga situation. She is an amazing mom to King and has an amazing heart.  The entire situation is so bizarre, and Rob has always been insecure about that. He probably singled out Kylie because of that.”

See more on the drama in the video below.

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