Kylie & Kendall Jenner “Simply Bikini” at The Mirage hotel in Las Vegas

They might only be 14 and 16 years old but Kendall and Kylie Jenner are already causing waves in the modelling world.

The sisters displayed their modelling potential last week as they sported different looks from the Kardashian Khaos bikini line at The Mirage hotel in Las Vegas.

While Kendall, 16, kept things simple in a black two-piece, 14-year-old Kylie opted for a more eye-catching look in a black and white polkadot bikini with a hot pink trim.

Modelling stars: Kendall Jenner, 16, wore a simple black Kardashian Khaos bikini while her 14-year-old sister Kylie opted for a black and white polkadot two-piece 

Kylie & Kendall Jenner tweeted their “Bikini” suit in the American flag

Despite enlightening fans with their ridiculously bulging wardrobe during a filmed interview with Oprah Winfrey, there doesn't seem to be much point having access to so many clothes.

Largely because Kendall and Kylie Jenner spend most of their time in bikinis.

The sisters shared snapshots of themselves celebrating Independence Day by stripping off to their swimwear and posing against the privileged backdrop of a swimming pool in their backyard.

Feeling patriotic: Kendall Jenner tweeted this photo of herself posing by a swimming pool waving the American flag

58+ Kendall Jenner "Lovely" Bikini Bottom Pics Gallery

Kendall Jenner is the oldest daughter of Bruce Jenner and Kris Jenner. She has a younger sister, Kylie Jenner. She also has four older half-sisters, Casey Jenner, Kourtney Kardashian, Kim Kardashian and Khloe Kardashian and four older half-brothers, Burton Jenner, Brandon Jenner, Brody Jenner and Rob Kardashian. (The Kardashians biological father was Robert Kardashian) Kendall's middle name "Nicole" is in honor of her godmother Nicole Brown Simpson.

Kylie & Kendall Jenner “Bikini sunbathe” in Hawaii

They have been busy little bees as they help keep the Kardashian empire humming.

And Kylie and Kendall Jenner enjoyed a much needed break in Hawaii today.

The two teenagers are holidaying on the tropical island with their parents Kris and Bruce Jenner.
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Fun in the sun: sisters Kylie and Kendall Jenner soak up the sunrays in bikinis as they holiday in Hawaii