Blac Chyna's Son Loves Her Growing Baby Bump -- Watch the Adorable Video

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King Cairo has got a heart of gold!

Blac Chyna took to Instagram on Thursday to share a sweet video of her and her 3-year-old son cuddling together and gently rubbing her growing baby bump. She captioned the post with a simple, "Aww" and crown emoji.

WATCH: Blac Chyna and Rob Kardashian Expecting First Child Together 

Cairo is Chyna's son with her ex, Tyga -- Kylie Jenner's on-again, off-again boyfriend. The 28-year-old model announced her engagement with Rob Kardashian back in April. One month later, the happy couple took to social media to share the baby news.

WATCH: Tyga Shares Photos of Son Hours After Ex Blac Chyna's Pregnancy Announcement 

In recent months, King Cairo's lovable personality and adorable fashion style has been featured in his parents' social media posts.

It doesn't get much cuter than that!

See what Tyga had to say about Chyna's pregnancy in the video below.