Pregnant Kim Kardashian Bares Her Baby Bump While Going for a Swim in St. Barts

Kim Kardashian is certainly well into her pregnancy.

Kim Kardashian is all about flaunting her burgeoning baby bump.

The 34-year-old reality superstar is currently on a family vacation in St. Barts with her mother, Kris Jenner, as well as Kourtney Kardashian and Khloe Kardashian. On Tuesday, the women fit in some exercise time during their rest and relaxation, taking a mountain hike, then doing some exercises with a trainer at the top of the cliff. Kim rocked just her sports bra and black workout leggings once they hit the ocean, showing off her bare belly.

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PHOTOS: The Kardashians Take Over St. Barts

Kim announced she was expecting her second child with husband, Kanye West, in late May. From the looks of it, she's certainly well into her pregnancy.

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Earlier this month, Kim Instagrammed a naked selfie to shut down those questioning if she's actually pregnant or not with baby number two -- this time, a baby boy.

"Everyone's body is different, every pregnancy is very different! I've learned to love my body at every stage!" she wrote. "I'm going to get even bigger & that's beautiful too! I'm blessed to even be pregnant & even luckier to not have preeclampsia as far as I know, so I don't have the swelling issue this time! They also say your body carries a boy different than a girl! Whatever the case may be I'm grateful to God for this miracle & no matter what rumors or comments you throw my way this time they truly don't affect me!

WATCH: Kim Kardashian Shares a Naked Pregnant Selfie -- 'I'm Going to Get Even Bigger'

The newest addition to the family will join their super cute 2-year-old daughter, North West. Check out North getting adorably messy in the name of chocolate in the video below!