Kourtney Kardashian is a glowing mama-to-be!

The reality star took to Instagram on Friday to share a series of snapshots from her day at the San Diego Zoo with her son Mason.

The expecting star showed off her blossoming belly in a tight black and white striped top, which she paired for shorts, a black hat and a denim shirt tied around her waist. 

In one pic, she is holding Mason and she reaches up to feed a giant giraffe. "Another Fun day at the @sandiegozoo!!!" she captioned the cute candid.

Kris Jenner also spent some quality time with her famous family, posing for a pic with Kim Kardashian's adorable daughter, North West.

Can you believe how big she's gotten!?

The Kardashian clan has had a busy summer on the east coast, spending the past few months filming her new reality spin-off, "Kardashians Take the Hamptons."

Kourt recently posted another pregnancy pic with her daughter Penelope. 

Posing in a gold string bikini, the brunette beauty looked glamorous as she soaked up the sun with her adorable little girl laying on top of her growing baby bump. 

We gotta hand it to the 35-year-old -- she looks amazing! What do you think of Kourtney's maternity style? Sound off below!

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