Making a splash! Kaia and Presley Gerber enjoy some water sports on family vacation in beautiful St Barts

There are clearly many perks to being a celebrity offspring, including luxurious family holidays in St. Barts.

Kaia and Presley Gerber joined their parents, Cindy Crawford and Rande Gerber for a family holiday on the Caribbean island on Tuesday.

The brother, sister duo - both up-and-coming models themselves - were seen swimming and playing in the crystal clear ocean.

Holiday time: Kaia and Presley Gerber were seen enjoying a beach vacation in St. Barts with their parents and a female friend

Holiday time: Kaia and Presley Gerber were seen enjoying a beach vacation in St. Barts with their parents and a female friend

Joining them was a mystery female friend.

Cindy, 51, and Rande, 54, largely steered clear, appearing to enjoy their own time while their kids played in the ocean.

Proving she's inherited her mom's stunning good looks, Kaia showed off her fit physique in a black bikini top and skimpy red pair of bikini bottoms.

Still stunning: Cindy Crawford showed off her bikini body while on the beach with her husband of 19 years, Rande Gerber

Still stunning: Cindy Crawford showed off her bikini body while on the beach with her husband of 19 years, Rande Gerber

Long walks on the beach... The 15-year-old enjoyed a stroll along the sand with her parents and a female friend

Long walks on the beach... The 15-year-old enjoyed a stroll along the sand with her parents and a female friend

On the run: The 17-year-old up-and-coming model was seen running out of the surf following a beach swim in St. Barts

On the run: The 17-year-old up-and-coming model was seen running out of the surf following a beach swim in St. Barts

She got it from her mama... Kaia flaunted her beach body while swimming with a female friend in St. Barts on Tuesday

She got it from her mama... Kaia flaunted her beach body while swimming with a female friend in St. Barts on Tuesday

Her handsome 17-year-old brother wore knee-length black boardshorts.

The 15-year-old appeared to be having a great time as she rode a mechanical bodyboard through the surf, donning an oversize pair of goggles.

Meanwhile, Presley was seen bodysurfing through the water and running across the beach.

Having fun: Kaia appeared to be having a great time as she rode through the water on what appeared to be a mechanical bodyboard

Having fun: Kaia appeared to be having a great time as she rode through the water on what appeared to be a mechanical bodyboard

Goggles on: At one stage, the brunette beauty donned a pair of oversize goggles, usually used for snorkeling

Goggles on: At one stage, the brunette beauty donned a pair of oversize goggles, usually used for snorkeling

Wave rider: Presley was spotted bodysurfing through the clear blue ocean in St. Barts during his family's holiday

Wave rider: Presley was spotted bodysurfing through the clear blue ocean in St. Barts during his family's holiday

Ab-solutely fabulous: The teen model showed off her washboard abs in a red and black bikini while on holiday

Ab-solutely fabulous: The teen model showed off her washboard abs in a red and black bikini while on holiday

The close pair were also seen chatting and laughing as they stood together in the ocean.

Both Kaia and Presley regularly share photos of each other on their respective Instagram accounts.

Kaia has even called Presley 'my best friend'. 

Meanwhile, Presley has said he is 'so proud of my sis'.  

Best friends: The siblings share a close bond, and regularly share photos of one another on Instagram

Best friends: The siblings share a close bond, and regularly share photos of one another on Instagram

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