Khloe Kardashian and Kendall Jenner flash their bums in tiny swimsuits

Khloe Kardashian and Kendall Jenner have flashed their impressive swimsuit bods while living it up in St Barts.

Khloe, 31, looked just as toned as her 19-year-old sister, Kendall. Both girls wore high-cut swimsuits as they pulled off some swish Instagram poses on the boat, which is crusing through the Caribbean sea.

In the first snap The Keeping Up With The Kardashians stars both stuck out their toned bums and pointed their fingers to the sky as they basked in the sun. We won't lie, we're very jealous, we've already been rained on twice today.

Khloe, who posted the images, wrote: "Close like Starsky and Hutch" on the first snap. Then added the slightly weird caption: "Made in Kris Jenner" for their second post.

Finally Kendall posted the final pic, entitled: "baeeeewatch part 2".