Rob Kardashian "can't wait" for his daughter Dream to start talking

Taking to Twitter on Wednesday (22.03.17), the sock entrepreneur

wrote: "I can't wait to hear what my baby's voice sounds like ... lol ... I'm waiting (sic)"

The tweet comes after 28-year-old Chyna - who also has four-year-old son King Cairo Stevenson with her ex-boyfriend Tyga - took to Snapchat on the same day to share a series of videos of their young daughter.

In the adorable footage, Dream can be seen blowing bubbles and gurgling at the camera whilst nestled in her mother's arms.

Despite the pair being separated, Rob then took a series of screengrabs from the videos and posted them on his Instagram account.

He captioned the snaps: "GOODnight my pretty baby (sic)"

The 'Keeping Up with the Kardashians' star revealed earlier this month that his little girl is his motivation to hit the gym and stay healthy.

Sharing a series of posts from the gym, he wrote: "Got it in with @gunnarfitness ... Green juice time ... woohoo.... and this weather is perfect ... greeeeeeen (kale, spinach, romaine, parsley, cucumber, celery, apple, lemon, ginger) movieeeee (sic)"

Shortly after his workout session, he shared a couple of pictures of his daughter, captioning them: "This is my inspiration ... This is my motivation. (sic)"

Meanwhile, Rob is said to be feeling "really positive" following his split from Chyna.

A source said: "Rob had been staying at Kris' house with the baby while Chyna was out of town and Kris was helping him with the baby.

He's in a really positive mood again.

"Everything was moving so fast with the relationship, the baby, the engagement and the show that this break has been really good for both of them. Now that they've had space, we'll see if they end up getting back together, but for now, they are still happily separated. They are both much happier and in a better place right now."