It was safety first as Kendall Jenner enjoyed an action packed day out in St Barts last week.

First smothering herself in sunscreen, then donning a lifejacket, the teen covered up her khaki green ʙικιɴι as she spent the day on a yacht with her sisters.

The reality stars enjoyed themselves parasailing, boating and sunbathing, taking a few selfies.

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Kendall was joined by her sister Kourtney for a spot of paragliding, with the two squealing with laughter as the wind pulled them into the air.

The pair flew along behind the boat, filming themselves with a GoPro camera as they sped along before being dunked in the ocean.

Kourtney, 36, kept her body covered up in a green one-piece and black shorts, having given birth to son Reign just a few short month before the vacation.

But despite her reticence the mother-of-three had no reason to feel shy, with her svelte figure already back in pre-baby shape.

Kourtney’s son Mason was with the party for the day at sea, along with Khloe and Kylie.

The vacation also saw Kim and daughter North, Kylie’s boyfriend Tyga, and family matriach Kris Jenner join the fun.

Kim complained on Twitter that she flet ‘bored’ to be missing out on so much physical activities. 

Pregnant with her second child, the 34-year-old was left minding her and Kourtney’s children while the rest of the family enjoyed the risky sports.

Along with parasailing, the group wore jet packs, rode on jet skis and whizzed around on speed boats. 

The week-long Caribbean trip was filmed for the family reality show Keeping Up With The Kardashians.